Question

Solve on the interval [0,2π):
1-cosθ=(2-√3)/2

A. π/6, 5π/6
B. 2π/3, 4π/3
C. 7π/6, 11π/6
D. π/6, 11π/6

Answer 1

http://www.wolframalpha.com/input/?i=1-cos%CE%B8%3D%282-%E2%88%9A3%29%2F2+

Answer 2

so d?

Answer 3

that's what i figured :P

Answer 4

thanks!