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Find the Exact Value by Using a Half-Angle Identity

Question 370

Multiple Choice

Find the exact value by using a half-angle identity.
-cos 75°


A) Find the exact value by using a half-angle identity. -cos 75° A) B) C) D)
B) Find the exact value by using a half-angle identity. -cos 75° A) B) C) D)
C) Find the exact value by using a half-angle identity. -cos 75° A) B) C) D)
D) Find the exact value by using a half-angle identity. -cos 75° A) B) C) D)

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