Math, asked by yashsharmackt, 9 months ago

Correct answer will be brainlist

Answer is0
You have to prove

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Answered by Anonymous

1

Step-by-step explanation:

SinA = 1/2

A = 30°

3CosA - 4Cos³A

-(4Cos³A - 3CosA)

-Cos3A

-Cos(3*30°)

-Cos90°

= 0

Answered by priya5231

1

Answer:

the answer is 0

it's proven

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