Question

find the exact value of the expression.
help please!
sin[-11pi/12]

Answer 1

You want to convert to degrees?

Answer 2

no I believe we have to break the -11pi/12 to two angles that we can find their value and go from there. but I am not entirely sure as that's only what the instructions say.

Answer 3

\[\sin \frac{x}{2}=\sqrt{\frac{1-\cos x}{2}}\]

Answer 4

Use 1=-11 pi/6 for x then x/2 is -11 pi/12

Answer 5

sin (-165)=sin(-15)
=-sin(15)
=-sin(60-45)
and go from there