Question

Solve for x, Sec (90⁰+A) + x SinA Tan (90⁰+A) = cos (90⁰+A)

Answer 1

Sec(90+A)+x sin A tan(90+A)=cos(90+A)

-cosec A +x sinA(-cot A)=-sin A

x sin A (-cos A/sin A)=-sin A + cosec A

x(-cos A)=(1/sin A)-sin A

x (-cos A)=(1-sin square)/sin A

x=(sin square A-1)/sin A cos A