*sigh* i seriously need on this question. i don't understand it. i would appreciate it if somebody would answer this question for me.

If value of cos330° is √3/2 then find tan165°.

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

The value of cos 30° is the same as which of the following?