engineering recuitment ISRO Scientific Assistant Physics 2020 Mathematics Trigonometry Trigonometric Functions
If A + B + C = 180°, then the value of sin 2A + sin 2B + sin 2C is equal to?
1
2 sin A sin B sin C
2
4 sin A sin B sin C
3
-4 sin A sin B sin C
4
4 cos A cos B cos C