Question

4 cos ^ 2 x +6 sin ^2 x=5

Answer 1

Here is your answer :-

4cos²x + 6sin²x = 5

4cos²x + 4sin²x + 2sin²x = 5

4 + 2sin²x = 5

2sin²x = 1

sin²x = 1/2

sinx = 1/√2

sinx = sin45°

x = 45°

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Answer 2

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here is the answer