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Find the Exact Value of the Expression Using a Sum

Question 6

Multiple Choice

Find the exact value of the expression using a sum or difference identity. Some simplifications may involve using symmetry and the formula for negatives. cos 165°


A) Find the exact value of the expression using a sum or difference identity. Some simplifications may involve using symmetry and the formula for negatives. cos 165° A) B) C) D)
B) Find the exact value of the expression using a sum or difference identity. Some simplifications may involve using symmetry and the formula for negatives. cos 165° A) B) C) D)
C) Find the exact value of the expression using a sum or difference identity. Some simplifications may involve using symmetry and the formula for negatives. cos 165° A) B) C) D)
D) Find the exact value of the expression using a sum or difference identity. Some simplifications may involve using symmetry and the formula for negatives. cos 165° A) B) C) D)

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