[tex]cos(\theta )=\cfrac{\stackrel{adjacent}{3}}{\underset{hypotenuse}{5}}\qquad \impliedby \textit{let's now find the \underline{opposite side}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies \sqrt{c^2-a^2}=b \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ \sqrt{5^2-3^2}=b\implies \sqrt{25-9}=b\implies \sqrt{16}=b\implies 4=b \\\\[-0.35em] ~\dotfill[/tex]
[tex]sin(\theta )=\cfrac{\stackrel{opposite}{4}}{\underset{hypotenuse}{5}}\qquad \qquad tan(\theta )=\cfrac{\stackrel{opposite}{4}}{\underset{adjacent}{3}}\qquad \qquad cot=\cfrac{\stackrel{adjacent}{3}}{\underset{opposite}{4}} \\\\\\ sec(\theta )=\cfrac{\stackrel{hypotenuse}{5}}{\underset{adjacent}{3}}\qquad \qquad csc(\theta )=\cfrac{\stackrel{hypotenuse}{5}}{\underset{opposite}{4}}[/tex]
The values of the five other trigonometric functions value for the same input θ for which cos(θ) = 3/5 are:
sin(θ) = 4/5tan(θ) = 3/4cot(θ) = 4/3sec(θ) = 5/3csc(θ) = 5/4What are the six trigonometric ratios?Trigonometric ratios for a right angled triangle are from the perspective of a particular non-right angle.
In a right angled triangle, two such angles are there which are not right angled(not of 90 degrees).
The slant side is called hypotenuse.
From the considered angle, the side opposite to it is called perpendicular, and the remaining side will be called base.
From that angle (suppose its measure is θ),
[tex]\sin(\theta) = \dfrac{\text{Length of perpendicular}}{\text{Length of Hypotenuse}}\\\cos(\theta) = \dfrac{\text{Length of Base }}{\text{Length of Hypotenuse}}\\\\\tan(\theta) = \dfrac{\text{Length of perpendicular}}{\text{Length of base}}\\\\\cot(\theta) = \dfrac{\text{Length of base}}{\text{Length of perpendicular}}\\\\\sec(\theta) = \dfrac{\text{Length of Hypotenuse}}{\text{Length of base}}\\\\\csc(\theta) = \dfrac{\text{Length of Hypotenuse}}{\text{Length of perpendicular}}\\[/tex]
What is Pythagoras Theorem?If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:
[tex]|AC|^2 = |AB|^2 + |BC|^2[/tex]
where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).
We're given that:
cosθ = 3/5 for some angle θ
Since we've got:
[tex]\cos(\theta) = \dfrac{\text{Length of Base }}{\text{Length of Hypotenuse}}[/tex]
Therefore, we have:
[tex]\dfrac{3}{5} = \dfrac{\text{Length of Base }}{\text{Length of Hypotenuse}}[/tex]
Let we consider a right angled triangle in which there is hypotenuse of length 5 units and base (from the perspective of one of its non-right angle) of 3 units (as shown in the image attached below).
(we couldve taken 3x and 5x instead of 3 and 5, for any positive real number value of 'x' as when we would take their ratio, that common factor 'x' would get cancelled out. We can think of 3 and 5 as the special case of 3x and 5x when x = 1)
Then, from that perspective, let the perpendicular be of the length 'p' units, then as per the pythagoras theorem, we get:
[tex]p^2 + 3^2 = 5^2\\p = \sqrt{25 - 9} = \sqrt{16} = 4 \: \rm units[/tex]
(took only the positive root to remove the square term because the value of p denotes length, which is a non-negative quantity).
Thus, we have:
From the perspective of the angle θ:
Length of the base = 3 unitsLength of the perpendicular = 4 unitsLength of the hypotenuse = 5 units.Thus, using these values, and the definition of the trigonometric ratios, we get:
sin(θ) = 4/5tan(θ) = 3/4cot(θ) = 4/3sec(θ) = 5/3csc(θ) = 5/4Thus, the values of the five other trigonometric functions value for the same input θ for which cos(θ) = 3/5 are:
sin(θ) = 4/5tan(θ) = 3/4cot(θ) = 4/3sec(θ) = 5/3csc(θ) = 5/4Learn more about Pythagoras theorem here:
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please help me will give branlist
Answer:
A. 8(3 + 8x)
Step-by-step explanation:
Hope it helps you in your learning process
can some help me out with this EXTRA POINTS!!
Answer: ≈ 185.73009
Step-by-step explanation:
area of square: [tex]length^{2}[/tex]
area of circle: [tex]\frac{radius^{2} * \pi }{y}[/tex]
length: 15
radius = diameter/2
radius: 5
area of square - area of circle = area between square and circle:
[tex]15^{2} - \frac{5^{2} * \pi }{2} = 225 - \frac{25\pi}{2}[/tex] ≈ 185.73009
hope it helps!
Please mark as brainliest.
You use 4 gallons of water on 30 plants in your garden. At that rate, how much water
will it take to water 45 plants?
Answer:
6 gallons
Step-by-step explanation:
30-----------4
45------------x
30x = 45x4
30x=180
x=6
A shortcut:
45 is ( 30+ half of 30)
( 4 + half of 4) = 4+2 =6
6 gallons
Step-by-step explanation:[tex]Assuming\ that\ it\ will\ take\ x\ gallons\ waters[/tex]
[tex]to\ water\ 45\ plants.[/tex]
[tex]4:30=x:45[/tex]
[tex]30x=4\times 45[/tex]
[tex]30x=18[/tex]°
[tex]x=180\div 3\\ x=6[/tex]
[tex]\left\{If\right.\ a:b=c:d,\ then\ ad=\left.\ bc\right\}[/tex]
I hope this helps you
:)
Solve the equation:
4x-x=600
Answer:
x=200
Step-by-step explanation:
4x-x=600
3x=600
divide by 3
x=200
to check your work:
4(200)-200=600
800-200=600
Write down a number which is •a multiple of 4. •a factor of 400. •not 4 or 400
Answer:
200
Step-by-step explanation:
4 multiplied by 50 = 200
400 divided by 200 = 2
so it is both a factor of 400, a multiple of 4, and it's neither 4 nor 400 :)
Arnav is also selling boxes of cookies he sells each box for 3.75 his goal to make more than 30 how many boxes of cookies could he sell to reach his goal
please help me out with these two problems
find X and Y
Answer:
Step-by-step explanation:
I'll work on the left triangle first:
tan 20 = x /10
x = 10tan 20 = 3.64
cos 20 = 10/y
y = 10/cos20 = 10.64.
tan 70 = 12/x
x = 12/tan 70 = 4.37.
sin 70 = 12/y
y = 12/sin70 = 12.77.
what are the coordinates of a point where graph of y=x2+3x+2 crosses the x axis
Answer:
x= -2, 0
Step-by-step explanation:
Help, me and my partner are timed, no links thx
Answer:
9/12
Step-by-step explanation:
There are 3 pies, the total amount of slices before they were eaten is 12. If you add the slices left..3+3+3 that would be 9
Answer:
D: 2 1/4
Step-by-step explanation:
I'm not really sure though. But since there are 3 apple pies if you take one slice from one of the pies and add it to another pie it will make one whole pie and then after there is one whole pie you do the same to another pie and their is 2 whole pies and their is one slice remaining and there is 4 whole slices in a whole pie so there fore I'm guessing that the answer is 2 1/4
I hope that helped. :)
please HELPPP! I have been stuck on this for too long.
what is the nature of triangle formed by the lines x+y=0 , 3x+y=0 , x+3y-4=0
Answer:
isosceles obtuse triangle
Step-by-step explanation:
The attached graph shows a plot of the three lines.
The triangle is an isosceles obtuse triangle in the 2nd quadrant.
_____
It is convenient to let a graphing calculator plot these lines. If you're going to plot them by hand, it usually works best to choose values of the variables for the variable that has the largest coefficient (3 in two of the equations). That way, you're not trying to plot coordinates that contain fractions.
For each equation how many solutions why?
Question e
Answer:
one real solution
Step-by-step explanation:
it has only one solution since it is a linear graph and only intercepts the x axis once
Help PLSS
(will give brainliest!)
Answer:
D (last one)
Step-by-step explanation:
You figure out the ordered pair for E which is (3,-4)
Then you apply the rule given in the instructions.
so you do 3+8= 11 so x = 11
then -4+5= 1 so y = 1
So you get (11,1)
Phil bought a new calculator. It cost $12.40. The tax rate is 7.25%. Calculate the sales tax.
Answer:
$0.90
Step-by-step explanation:
0.0725(12.40) = 0.899
0.899 = 0.90
Hope this helps :)
Name the circle
Will give a lot of points!!! ASAP
Circle KJI center L, radius LK/diamter KI?
How many apples could you buy if you went to the store with five dollars? *
Answer:
depends on how much the apples cost
You are starting a savings account for college. You put $1,000 in as your starting balance. You earn simple interest at 10% every year. You also must pay 30% income tax on the interest earned annually. Calculate the balance for the account after 5 years
Answer:
$1,350
Step-by-step explanation:
Simple interest formula
I = Prt
where:
I = interestP = principalr = interest rate (in decimal form)t = time (in years)Given:
P = $1,000r = 10% = 0.1t = 5 years⇒ Total interest earned = 1000 × 0.1 × 5 = $500
If you have to pay 30% income tax on the interest earned annually, then you will keep 70% of your earned interest.
⇒ 70% of $500 = 0.7 × $500 = $350
Account balance = principal + interest earned after tax
= $1,000 + $350
= $1,350
given right triangle ABC with altitude BD drawn to hypotenuse AC. If BD = 24 nd DC = 12, what is the length of AD?
Answer:
Step-by-step explanation:
YES IS THE ANSWER BECAUSE X=9
AND 11+3=87
An office supply store in Newport purchased a printer at a cost of $175 and marked it up 45%. Later on, Oliver bought the printer. If the sales tax in Newport is 12%, how much did he pay in all?
please help asap would appreciate it ty
Answer: $284.20
Step-by-step explanation:
In the picture
Ben runs 3/4 mile each day.How many Miles Does ben run in 12 days
Answer:
9 miles
Step-by-step explanation:
0.75x12=9
or
75x120=90
90/10=9
If Ben runs 3/4 mile each day than he runs 9 miles in 12 days.
To find out how many miles Ben runs in 12 days
we need to multiply the distance he runs each day (3/4 mile) by the number of days (12).
First, let's convert 3/4 mile to a decimal:
3/4 mile = 0.75 mile
Now, we can calculate the total distance Ben runs in 12 days:
0.75 mile × 12 days
= 9 miles
Therefore, Ben runs 9 miles in 12 days.
To learn more on Unit of Measurement click:
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What is the correct answer?
Answer:
2.38 yds^3
Step-by-step explanation:
Volume of a box = width x length x height
Now we multiply!!
? = 1 x 1.7 x 1.4
1 x 1.7 x 1.4 = 2.38
Have an amazing day!!
Please rate and mark brainliest!!
[tex] \huge\fbox\orange{ANSWER} [/tex]
[tex] \mathsf \purple{v = l \times w \times h}[/tex]
[tex] \mathsf \pink{v = 1.7 \times 1 \times 1.4}[/tex]
[tex] \mathsf \purple{v = 2.38 {yd}^{3} }[/tex]
2.38 cubic yards
log2^2-log2^16 what is the answer
Answer:
-4.1-4.1212
Step-by-step explanation:
Log2^2-log 2^16
log2^2/2^16
log2^2-16
log2^-14
-14log2
-14×0.3010
-4.1-4.1214
A square pyramid has
a base edge of 8 inches
and a surface area of 304
square inches. Find the
Slant height of the
pyramid.
The slant height of the square pyramid that has a surface area of 304 sq. in. is: 16 inches.
What is the Surface Area of a Square Pyramid?Surface area (SA) = a² + 2al
Given the following parameters:
Surface area = 304 sq. in.a = 8 in.l = ? (slant height)Plug in the values into (SA) = a² + 2al:
304 = 8² + 2(8)l
304 = 64 + 16l
304 - 64 = 16l
240 = 16l
240/16 = l
15 = l
l = 16
Therefore, the slant height of the square pyramid that has a surface area of 304 sq. in. is: 16 inches.
Learn more about surface area of a square pyramid on:
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Please Help! will give Brainlest!
Answer:
y = 0
Step-by-step explanation:
the midline is positioned midway between the maximum and minimum values of the function.
maximum = 0.5 and minimum = - 0.5 , then
y = [tex]\frac{0.5-0.5}{2}[/tex] = [tex]\frac{0}{2}[/tex] = 0
the equation of the midline is y = 0 ( that is the x- axis )
Answer:
y=0
Step-by-step explanation:
y = 0.5−0.52\(0.5-0.5)(2)
2
0.5−0.5
= -0.02/0
= 0
The midline is y=0
Andrea thought that x = 15 would be a good guess to solve 6x + 19 = 150. Should her second guess be higher or lower? Why?
Answer:
higher
Step-by-step explanation:
should be higher since 6 x 15 is 90, which is far away from 150
Answer:
should be higher
Step-by-step explanation:
because 6×15=90 and 90+19 is lower than 150
the drop down box numbers are 39, 90, 120, and 180
Answer:
Im thinking the answer is 90.
Step-by-step explanation:
There are 360 and that is a small section for 120 or 180 people to all take a break at.
-Hope this helps!
-Justin
At the state fair, 2 bags of mini donuts and 4 turkey legs cost $18.50. for $13.75, you can buy 3 bags of mini donuts and 2 turkey legs.using these amounts, which system of equations can be used to find the cost of 1 bag of mini donuts?
PLEASE PLEASE HELP !! The translation below is used on all three triangles.
(x, y) → (x, y + 1)
What happens to the triangles? Which answer would it be A, B, C, or D?
(I WILL MARK AS BRAINLIEST! PLEASE HELP!)
(A) They all move 1 unit to the right.
(B)They all move 1 unit to the left.
(C)They all move 1 unit down.
(D)They all move 1 unit up.
Answer:
D
Step-by-step explanation:
They all move 1 unit up.
The mapping notation essentially tells you, what you do to each point to get the image point.
In this case (x,y)→(x,y+1) is telling you, for any given coordinate on the original, you add 1 to its y coordinate. Adding 1 to a y coordinate moves it up one unit.
what is the numerical coefficient of a+4a^3-6a^2+2a^4
Answer:
2a2 • (a + 1) • (a - 3)
Step-by-step explanation:
Write the expression as a product.
25-(a + 7)^2
[tex]25 - ({a + 7})^{2} = [/tex]
[tex](5 + (a + 7))(5 - (a + 7)) = [/tex]
[tex](a + 12)( - a - 2)[/tex]
Have a great day ♡