Question

Check my work if I'm correct.
Find the exact value of sin(-11pi/12).

Answer 1

So I changed it from radians to degrees to make it easier.

Answer 2

sin(-11(3.1415926535)/12)

Answer 3

I'm not allowed to use the calculator. :)

Answer 4

= sin(0.26)

Answer 5

math I just remember first digits of pi so

Answer 6

You would just simplify 3.141592/12, which is around 0.26

Answer 7

then find the sin of 0.26

Answer 8

Should I use a reference angle to find -165?

Answer 9

So it'll be 15.