Question

Angle θ lies in the fourth quadrant, and cot θ = -8/15.

Sin θ=
Cos θ=

Answer 1

cse^2 x=1+cot^2x
=1+(64/225)
cse x=-17/15
sin x=-15/17 in IV QRNT
and cos^2 x=1-sin^2 x=1-(225/289)
cos x=8/17

Answer 2

Thanks