Images 8 13 SIN A

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8 13 sin a. 6cos^2x-13sinx -13=0. 6cos²x+13sinx-8. 6cos2 x + 13sin 2x = –10. 8 Sin^2 x+6 cos^2 x= 13 sin 2x.
6cos^2x-13sinx -13=0. 6cos²x+13sinx-8. 6cos2 x + 13sin 2x = –10. 8 Sin^2 x+6 cos^2 x= 13 sin 2x.

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