2 cos squared theta + 3 sin theta - 3 = 0 determine the value of theta..
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- sin ² x + cos ² x=1
- cos² x=1 - sin ² x
- 2(1-sin ² ø )-3sin ø=0
- 2-2sin²ø-3sin ø=0
- 2 sin ²ø+3 sin ø-2=0
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