Question

cos 2x = cos 60° cos 30° + sin 60° sin 30° find out the value of x​

Answer 1

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Answer 2

Step-by-step explanation:

Cos 2x =cos 60°. Cos 30° + sin 60°

Cos 2x =cos (60-30)

2x =30

2x =30/2

x =15

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