Finding Exact Value of d tan (π/12)

[rachael]

Use the compound angle formulas and appropriate angles to find the exact value of each
of the following:
D. d tan (pi/12)

thank you

 

[HallsofIvy]

Use the compound angle formulas and appropriate angles to find the exact value of each
of the following:
D. d tan (pi/12)

thank you

Alright, what have you done? In particular what are the "compound angle formulas" and what is "d"?

 

[dextercioby]

Hints:

1.\sin \frac{\pi}{6} = 2\sin \frac{\pi}{12} \cos \frac{\pi}{12}

2.\tan \frac{\pi}{12}=\frac{\sin\frac{\pi}{12}}{\cos\frac{\pi}{12}}

Daniel.