Unit circle question.

If some coordinates are given to us, and we are asked to find the central angle in radians. What should we do?

In my opinion, we first find out which quadrant the coordinates are in.

2nd, we look for reference angles. After finding the reference angle, we solve for central angle.

Am I right?

Question

Unit circle question.

If some coordinates are given to us, and we are asked to find the central angle in radians. What should we do?


In my opinion, we first find out which quadrant the coordinates are in.

2nd, we look for reference angles. After finding the reference angle, we solve for central angle.

Am I right?

baru · Answer

what do you mean by 'central angle' and 'reference angle' ?
can you explain/draw ?

korosh23 · Answer

|dw:1448763744625:dw|