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QUESTION 4 Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent. (2-2cosx)(2+2cosx) O a. 4

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QUESTION 4 Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent. (2-2cosx)(2+2cosx) O a. 4 csc x O b. 4 - cos x O C. 4 1 + cot x O d. 4 sin x de. 4-4cos x QUESTION 5 Find all solutions of the given equation in the interval [0, 27). tan = sin x O ax= 0, - . 2 ' 2 O b. x = 0, n Ocx = 0, ~ , 1, 2A O d. x = 0 5 , 74 2

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