Question

If A, B, C are angles in a triangle, then prove that
sinA +sin?B - sin’C = 2 sin A sin B cos C.​

Answer 1

Answer:

$\sqrt[12541 {25 \frac{2662 \sqrt{52.1y2621x25(.6) \sqrt[22 \sqrt[?]{?} ]{?} } }{?} }^{?} ]{?}$