Question

if 2 cos 3A is equal to 1 then the value of a is​

Answer 1

This is your answer

given 2cos 3A=1

then we can say that cos 3A =1/2

hence.,

cos 3A = cos 60°

cos will be cancelled out hence A will be 20°

(you can convert it into radians by π/180 formula as 1 radian = π/180× degree measure )

that is 20× π/180

this will give π/9 radians

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Answer 2

Answer:

it is your answer

i hope it is helpful for you