Find the complete solution to the nearest tenth if sin theta

Find the complete solution (to the nearest tenth) if sin theta = -.98544973 and 0 LE theta

Solution

1)sin=-0.98544973

=arcsin(-0.98544973)

=4.88 radians

2)2sin-3=0

sin=3 /2

=/3 .2/3

3)cos² -2cos-3=0

(cos+1)(cos-3)=0

cos=-1,cos=3

range of coa is [-1,1]

cos=-1

=pi

one solution