Math, asked by aruns142338, 5 hours ago

If cosA=1/2 ,then find the value of cos 4A.

Answers

Answered by priyanshuverma01mail

1

Answer:

- 0.5

Step-by-step explanation:

cosA = 1/2

then A = 60°

now, cos 240 ° = -0.5

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