Question

express sin 50 degree +sin 20 degree as a product​

Answer 1

Answer:

$\huge{ \mathbb { \red{60°}}}$

Answer 2

Answer:

sin 50° + sin 20° as a product is 2 sin 35° cos 15°

Step-by-step explanation:

We have to express sin 50° + sin 20° as a product.

We know that sin A + sin B = 2 sin ($\frac{A+B}{2}$) cos ($\frac{A-B}{2}$)

Taking A = 50° and B = 20° and substituting in the above formula, we get,

sin 50° + sin 20° = 2 sin ($\frac{50+20}{2}$) cos ($\frac{50-20}{2}$)

                           = 2 sin ($\frac{70}{2}$) cos ($\frac{30}{2}$)

                           = 2 sin 35° cos 15°

Therefore, sin 50° + sin 20° as a product is 2 sin 35° cos 15°