Write the expression as either the sine, cosine, or tangent of a single angle.

sin 48° cos 15° - cos 48° sin 15°

A. cos 33°

B. cos 63°

C. sin 63°

D. sin 33°

Question

Sheppard

2 December, 10:48

+4

Answers (1)

Know the Answer?

Tessa Swanson · Answer 1

The identity that applies here is:

sin (A - B) = sinAcosB - sinBcosA

With A = 48 and B = 15

Thus,

sin (48 - 15)

= sin (33)

The answer is D.

Write the expression as either the sine, cosine, or tangent of a single angle.sin 48° cos 15° - cos 48° sin 15°A. cos 33°B. cos 63°C. sin 63°D. sin 33°