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cricket20 [7]
3 years ago
7

I need help on number 59. It makes no sense to me, I cannot figure out how I would use Pythagorean identities to solve this. Ple

ase help!

Mathematics
1 answer:
Readme [11.4K]3 years ago
5 0
If you have never used a unit circle, I recommend making one. 
R for the following degrees are
30*= 4((3^1/2)/2)^2
60*= 8(2^1/2)(2^1/2)^2
90*= (8((3^1/2)/2))/4
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The general equation of a cosine function with an amplitude of 3, a period of 4 π, and a horizontal shift of negative π is f(x) =3cos(0.5x+\pi ).

<h3>What is a function?</h3>

A function is a rule that relates two variables.

The parent function is:

f(x)=cosx

We know the period of the parent function is 2π and the amplitude is 1.

For an amplitude of 3, we need to multiply the parent function by 3.

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So, f(x) = 3cos(0.5x)

A horizontal shift of negative π means, f(x) will become f(x+π)

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