Complete the identity.
-$$\frac { \sin 3 x + \sin 7 x } { \cos 3 x + \cos 7 x } = ?$$
A) $\tan 5 x$
B) $\tan 3 x + \tan 7 x$
C) $2 \tan 5 x \tan 2 x$
D) $\tan 5 x \cot 2 x$

Name: Complete the identity. -\[\frac { \sin 3 x + \sin 7 x } { \cos 3 x + \cos 7 x } = ?\] A) $\tan 5 x$ B) $\tan 3 x + \tan 7 x$ C) $2 \tan 5 x \tan 2 x$ D) $\tan 5 x \cot 2 x$
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Question

Quizplus · Accepted Answer

The identity can be simplified using the sum-to-product identities for sine and cosine. The expression simplifies to $\tan 5x$.

Complete the Identity sin⁡3x+sin⁡7xcos⁡3x+cos⁡7x=?\frac { \sin 3 x + \sin 7 x } { \cos 3 x + \cos 7 x } = ?cos3x+cos7xsin3x+sin7x​=?

Complete the Identity $\frac { \sin 3 x + \sin 7 x } { \cos 3 x + \cos 7 x } = ?$