cosx=2sin45 cos45-SIN30
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Answer:
x = 60°
Step-by-step explanation:
cosx° = 2×(√2/2)×(√2/2) - 1/2 = 2×[(√2)²/4] - 1/2 = 1 - 1/2 = 1/2
cosx° = 1/2 ===> x = 60°
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