lost on this one

Question

Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.

 

tan  π 12  + tan  π 6

1 − tan  π 12  tan  π 6

 

Find its exact value.

 

Answer 1

The trigonometric expression is .

 

Addition formula for trigonometric identity is .

Substitute and in the trigonometric formula.

The value of trigonometric expression is .