Question

Use on of the sum and difference formulas to find the exact value of tan 75degrees

Answer 1

Trivial,
\[ \tan(45^\circ +30^\circ) = \cdots \]

Answer 2

2+sqrt(3)

Answer 3

tan(a+b)=(tan a + tan b)/(1- tan a tan b)

Answer 4

a=45 and b=30