Find the exact value of each of the remaining trigonometric functions of θ. cosθ=− 3/8​, π 2<θ<π

Answer 1

If the interval is pi/2<x<pi

then x is in the second quadrant.

The remaining trigonometric functions are: sec x=-8/3, sin x=8 sqrt.55/8, csc x= 8 sqrt.55/55, tan x=-sqrt.55/3,

cotan x =3 sqrt. 55/55.