Question

If tan A, + sec A, = 10, what is the value of sin A? ​

Answer 1

Sina/cosa + 1/cosa =10

sina +1 = 10cosA

sina^2 = (10cosa -1)^2

sinA^2 = 100CosA^2 +1 -20CosA

sinA^2 = 1- 100sinA^2 +1 -20CosA

101sinA^2 = -20cosA