Question

Write the expression as the sine, cosine, or tangent of an angle.
sin 8x cos x - cos 8x sin x

Answer 1

sin(7x)

Answer 2

hi, remember that:
\[\sin (a-b)= \sin(a)\cos(b)-\sin(b)\cos(a) \]

Answer 3

\[\sin(8x-x)= \sin (7x)\]