Упростите: сos(pi/2+t)/sin(pi-t)*tg(-t)

Question

Упростите: сos(pi/2+t)/sin(pi-t)*tg(-t)

Answer 1

Cos (pi/2 + t) = -sint
sin ( pi - t) = -sint
tg(-t) = -tgt

-sint
------- * (-tgt) = -tgt
-sint