Posted by **Ashwin** on Sunday, May 15, 2011 at 2:44pm.

Given cos X = -0.147, find two possible values for X that are not co-terminal.

- Algebra 2 / Trig -
**Reiny**, Sunday, May 15, 2011 at 3:00pm
X = appr. 98.45° or X = 261.55°

The first of these in in quadrant II, the second is in III, thus they are not coterminal.

- Algebra 2 / Trig -
**Ashwin**, Sunday, May 15, 2011 at 3:06pm
Thank you. Can you explain how to do this?

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