# Math Help - Trig ID's

1. ## Trig ID's

Could someone please work this out so I can check my work....
Tan(-7Pi/12)...Tan(-pi/3 + -pi/4). Use Tan A + Tan B/ 1- Tan A Tan.

Thanks.

2. Hello, Brndo4u!

Has it occurred to you? . If you show us your work
(or the answer, at least), we can check it for you.

Evaluate: . $\tan\left(-\frac{7\pi}{12}\right)$

Answer: . $2 + \sqrt{3}$