Question

Evaluate and simplify tan 15º.

Answer 1

You can write tan(15) as :
\[\tan(45 - 30)\]

Now use the formula:
\[\tan(A - B) = \frac{\tan(A) - \tan(B)}{1 + \tan(A)\tan(B)}\]

Answer 2

And :
\[\tan(45) = 1\]
\[\tan(30) = \frac{1}{\sqrt{3}}\]

Answer 3

-sqrt3/2 is this correct

Answer 4

No, check it once again..

Answer 5

sqrt2/2 ?

Answer 6

Are you guessing it??