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Write the expression as the sine, cosine, or tangent of an angle.

Guide :High School

Write the expression as the sine, cosine, or tangent of an angle.

Write the expression as the sine, cosine, or tangent of an angle. sin 9x cos x - cos 9x sin x
If we know thatSin( x + y) = Sin(x) Cos(y) - Cos(x)Sin(y)then sin 9x cos x - cos 9x sin x -> Sin(9x+X) = Sin(10X)  ...

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