sin 5x cos x - cos 5x sin x = sin(4x)

Step-by-step explanation:

Given the the trigonometric expression,

sin 5x cos x - cos 5x sin x

Here we use the \"sum and also difference formulas\"

Sum and also Difference Formulas

sin(A+B)=sin A cos B + cos A sin B

sin(A-B)=sin A cos B - cos A sin B

cos(A+B)=cos A cos B - sin A sin B

cos(A-B)=cos A cos B + sin A sin B

So,

sin 5x cos x - cos 5x sin x = sin (5x - x)

sin 5x cos x - cos 5x sin x = sin(4x)

That\"s the last answer.

You are watching: Write the expression as the sine, cosine, or tangent of an angle. sin 5x cos x - cos 5x sin x

sin 5x cos x - cos 5x sin x = sin(4x)

Step-by-step explanation:

Given that the trigonometric expression,

sin 5x cos x - cos 5x sin x

Here we use the \"sum and difference formulas\"

Sum and Difference Formulas

sin(A+B)=sin A cos B + cos A sin B

sin(A-B)=sin A cos B - cos A sin B

cos(A+B)=cos A cos B - sin A sin B

cos(A-B)=cos A cos B + sin A sin B

So,

sin 5x cos x - cos 5x sin x = sin (5x - x)

sin 5x cos x - cos 5x sin x = sin(4x)

That\"s the last answer.

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