Question

Geometry Check Pls! Will Medal/Award!! :D
Find the diameter of Circle O. If your answer is not a whole number, round your answer to the nearest tenth.

Answer 1

You can work out angle PQO from the Tan function

Triangle PQO is isosceles (it has 2 sides of length r)
Therefore angle OPQ is the same as angle PQO

so use the sin rule to work out angle POQ
Then you have angle POR

so use the sin function to work out r, hence Diameter