Question

if a + b + C is equal to 5 cm find sin square A by 2 + sin square B by 2 + sin square C by 2 is equal to 1 minus 2 sin a by 2 into Sin B by 2 into sin C by 2​

Answer 1

Step-by-step explanation:

prove that :( sin A + Cos A ÷ sin A - cos A ) ÷ ( sin A - cos A ÷ Sin A + cos A ) = 2÷ (sin A)2 - (cos A )2 = 2÷ 2(sinA *2 -1) = 2÷ 1-2 (cos)2 A )