Question

Find the value of x , if sin3x = 2sin30°cos30°​

Answer 1

Answer:

x = 20°

Step-by-step explanation:

We know, sin3x = 2sin30°cos30°

By putting values of sin30° & cos30°, sin3x = 2 * 1/2 * √3/2

sin3x = √3/2

We know that √3/2 is the value of sin60°,

Then, sin3x = sin60°

Evaluating, 3x = 60°

x = 60°/3

x = 20°

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