Math, asked by akankshav607, 1 month ago

The value of A if 2cos3A=1 is

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Answered by Shinchan2021

1

Answer:

Hope it helps... pls mark my answer as Brainliest

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Answered by Anonymous

3

Answer:

$a = 20$

Step-by-step explanation:

$2 \cos3a = 1 \\ \cos3a = \frac{1}{2} \\ cos3a = \cos60 \\ 3a = 60 \\ a = 20$

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