Question

The value of the angle ${\tan }^{-1}\left(\tan 65^{\circ }-2\tan 40^{\circ }\right)$ in degrees is equal to

• A. $-20^{\circ }$
• B. $20^{\circ }$
• C. $25^{\circ }$
• D. $40^{\circ }$

Answer 1

Answer: (C)

Correct answer is (c) $25^{\circ }$