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n200080 [17]
3 years ago
12

I dont understand this.. evaluate the trig functions using its period as an aid. . sin5π. . what is this \"period\"

Mathematics
1 answer:
andrew-mc [135]3 years ago
6 0
<span>Basically to convert 5pi to degree you multiply by 180/pi and this converts it so pi cancels out and you get 900 degree than 900-360 = 540 than 540 -360 = 180 and sin of 180 is zero!, 

but you can use the unit circle chart to do this basically all even pi will fall at 360 or 0 degree and odd pi will fall at 180 degree so in the next question 7 pi will give you 180 degree (if you do it the long way 7pi * 180/pi = 1260 - 360 = 900 -360 = 540- 360 = 180) and cosine of 180 is 1, so cos 7pi is 1 

for 8pi/3 long way will give you 120 degree but if you use unit circle it will help you even more just go around the circle and count pi/3, basically pi/3 means 180/3 parts so 60 degree for each so 6pi/3 is 360 and so remaining is 2pi/3 means 60+60 = 120 degree. 30, 60, and 90 degree special triangle tells you the value of hypotenuse is 2, opposite side is radical 3 and adjacent is 1, since its in second quadrant the 1 or x value is gonna be negative so cosine would be -1/2. try in calculator it should give you -0.5 

do the same for the rest! 

look up also 30, 60, and 90 degree special triangle and use the values to cosine and sin or goggle it and they will show you how to solve for it ... faster than calculator.

============================================


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
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Lostsunrise [7]

Answer:

The volume in terms of π is 144 ft³

The volume rounded to the nearest tenth is 452.4 ft³

Step-by-step explanation:

The formula of the volume of a cone is V =  π r² h , where r is its radius and h is its height

The formula of the area of a circle is A = π r²

The area of the base of the cone is 36π ft²

Equate the formula of the area of the circle by 36π to find r

πr² = 36π

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r² = 36

Take √ to both sides

r = 6 ft

The height of the cone is equal to twice the radius

The radius of the cone is 6 ft

Multiply 6 by 2 to find the height

h = 2(6) = 12 ft

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V =  π(6)²(12)

V = 144 π ft³

V = 452.3893421 ft³

Round it to the nearest tenth

V = 452.4 ft³

6 0
2 years ago
Tre Algebra<br>Assignment Day 4<br>Solve each equation<br>1) -2-4-2<br>-2<br>.1​
Debora [2.8K]

Answer:

If your question is -2 - 4 - 2 - 2.1 then the answer is -10.1

Step-by-step explanation:

-2 - 4 - 2 - 2.1

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=  -6 - 2 - 2.1                        

= (-6 - 2 )- 2.1                       Combine -6 and -2

= -8 -2.1                                Combine -8 and -2.1

= -10.1

<h3><u><em>Please rate this and please give brainliest. Thanks!!! </em></u></h3><h3><u><em>Appreciate it! : ) </em></u></h3><h3><u><em>And always, </em></u></h3><h3><u><em>SIMPLIFY BANANAS          : )</em></u></h3>
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How to do the problem
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Step-by-step explanation:

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If A and B are independent events and P(A) and P(B) are both greater than 1/2
elixir [45]

Answer:

P(A and B) is greater than 1 is never happened ⇒ C

Step-by-step explanation:

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- Remember the product of any fractions less than 1 is less than 1

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3 years ago
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Answer:

Step-by-step explanation:

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3 years ago
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