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Find the Exact Value cos95cos50+sin95sin50\cos 95 ^ { \circ } \cos 50 ^ { \circ } + \sin 95 ^ { \circ } \sin 50 ^ { \circ }

Question 1

Multiple Choice

Find the exact value. cos95cos50+sin95sin50\cos 95 ^ { \circ } \cos 50 ^ { \circ } + \sin 95 ^ { \circ } \sin 50 ^ { \circ }


A) 32/23 \sqrt { 2 } / 2
B) 2/2\sqrt { 2 } / 2
C) 11
D) 3/2- \sqrt { 3 } / 2
E) none

Correct Answer:

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