Question

2 cos squared theta + 3 sin theta - 3 = 0 determine the value of theta..​

Answer 1

Answer:

1. sin ² x + cos ² x=1
2. cos² x=1 - sin ² x
3. 2(1-sin ² ø )-3sin ø=0
4. 2-2sin²ø-3sin ø=0
5. 2 sin ²ø+3 sin ø-2=0