Math, asked by RUSHI0907, 1 year ago

√2+√2+√2+cos8x = 2 cos x

Answers

Answered by abhikarsingh212

7

Answer:

3√2+COS8x=2COSX

3√2=2COSX-COS8X

3√2=-Cos6x

Cos x = 3√2/6

Cos x =√2/2

Step-by-step explanation:

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