Math, asked by choudharigandharv, 1 year ago

√2+√2+√2+2cos8x = 2cosx

Answers

Answered by Anonymous

2

Answer:

3√2+2cos8x =2cos x

I don't know what have to do after this

Answered by karanjotgaidu

18

Answer:

Cos 2x = 2cos²x - 1

2cos²x = cos2x + 1

1+cos2x = 2cos²x

1+cos4x = 2cos²2x

1+cos8x = 2cos²4x

PLS MARK AS BRAINLIEST

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