Write sin (9x) cos (3x) - cos (9x) sin (3x) as a single trigonometric function.
A) sin 6x
B) cos 6x
C) sin 12x
D) cos 12x

Name: Write sin (9x) cos (3x) - cos (9x) sin (3x) as a single trigonometric function. A) sin 6x B) cos 6x C) sin 12x D) cos 12x
Brand: Quizplus
Rating: 4.8 (29 reviews)

Question

Quizplus · Accepted Answer

This expression is an application of the sine subtraction formula, sin(A - B) = sinA cosB - cosA sinB, with A = 9x and B = 3x, resulting in sin(9x - 3x) = sin(6x).

Write Sin (9x) Cos (3x) - Cos (9x) Sin (3x)