Math, asked by pazara8229, 10 months ago

Express as a product: cos 4x + cos 8x

Answers

Answered by anwitabose08

5

Answer:

PLEASE MARK AS BRAINLIEST!!

Step-by-step explanation:

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Answered by atulyadav91

1

Answer:

hey frnd.

ANSWER

cos4x+cos8x

=2cos

2

4x+8x

cos

2

8x−4x

∵cosC+cosD=2cos

2

C+D

cos

2

C−D

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