Verify that the equation is an identity. cos 2x = coS X cot x- sin x sin x To verify the identity, start with either side and transform it to look like the other side. In this example, we will start with the right side. Choose the correct transformations and transform the expression at each step. cos x cot x – sin x= (Do not simplify.) cos 2x %3D sin x

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A: Given The given equation is y=-3cos2x+π3+4 The standard form of the sine and cosine functions and…

Q: 1. Use the graph below to answer the following questions. 10 A) Write a cosine function: B) Write a…

A:

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A: use trigonometric identity

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Q: Cos(-120)

A: Given that cos(–120). The value of cos(–120) is calculated as follows.

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A: Given,