Prove it please
answer only if you know​

Part (c)

We'll use this identity

to say

Similarly,

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The key takeaways here are that

Therefore,

The identity is confirmed.

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Part (d)

Similarly,

-----------------

We'll square each equation

and

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Let's compare the results we got.

Now if we add the terms straight down, we end up with on the left side

As for the right side, the sin(A)cos(A) terms cancel out since they add to 0.

Also note how and similarly for the sin^2 terms as well.

The right hand side becomes but that's always equal to 1 (pythagorean trig identity)

This confirms that is an identity

your answer is a

step-by-step explanation:

4*4*4*4=256

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .