Question

Use a half-angle formula (not your calculator or other computing device) to determine the value of sin(13π/12).
a. 1/2
b. (√2)/4+(√6)/4
c. (√3)/4
d. (√2)/4-(√6)/4

Answer 1

\[-\sqrt{\frac{1-\cos(\frac{13\pi}{6})}{2}}\]

Answer 2

-sqrt(-sqrt(3)/4+1/2)?

Answer 3

or you could use \(\frac{3\pi}{4}+\frac{\pi}{3}=\frac{13\pi}{12}\)

Answer 4

might be easier given your possible solutions

Answer 5

D?

Answer 6

yeah i think it is actually the same as the last one