Question

No 1.a gimana ya ? pake cara!!

Answer 1

Tan A cos^4 A + cot A sin^4 A
= (sin A)/(cos A) . Cos^4 A + (cos A)/(sin A) . Sin^4 A
= Sin A cos^3 A + cos A . Sin^3 A
= Sin A cos A (cos^2 A + sin^2 A)
= Sin A cos A . 1
= Sin A cos A