What is the value of sin 2A, If A is 30º?

Solution: 

Sine is a trigonometric function of an angle defined as the ratio of the length of the perpendicular(opposite) side to the hypotenuse.

A = 30°

2A = 2 × 30° = 60°

Thus, sin 2A = sin 60°

Substituting the value of sin 60°,

sin 60°= √3 / 2

Thus, the value of sin 2A = √3 / 2.

What is the value of sin 2A, If A is 30º?

Summary:

The value of sin 2A is √3 / 2