Question

solve the equation in notebook please​ q7.

Answer 1

Answer:

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Answer 2

2(1-sin²Ø) + 3sinØ - 3 = 0

2 - 2sin²Ø + 3sinØ - 3 = 0

-2sin²Ø + 3sinØ - 1 = 0

2sin²Ø - 3 sinØ +1 = 0

2sin²Ø - sinØ - 2sinØ + 1 = 0

sinØ(2sinØ - 1) -1 (2sinØ - 1) = 0

(sinØ-1)(2sinØ-1) = 0

If,

sinØ - 1 = 0

sinØ = 1

Again If,

2sinØ - 1 = 0

sinØ = 1/2

So,

SinØ = 1 or 1/2