Question

given x =30° question is sin3x=3sinx-4sin^3x
step by step solve​

Answer 1

Answer:

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Answer 2

Answer:

Step-by-step explanation:

Given : x = 30

LHS = sin 3x = sin 3*30 = sin 90 = 1

RHS = 3sin x - 4 sin^3 x

           3 sin30 - 4 sin^3 30

           3 *1/2   -  4 * 1/8

           3/2 - 1/2

           2/2

            1

==> LHS = RHS

Hence Proved