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January 25, 2015

January 25, 2015

Posted by **Juliet** on Wednesday, March 17, 2010 at 9:58pm.

- trig -
**Damon**, Wednesday, March 17, 2010 at 10:05pmwell, cos is 1/sec so if one is + the other is +

In quadrant 4 in fact the cos is +

and also in quadrant 1 the cos is +

but in quad one they are all plus.

It can not be quad 2 or quad 3 because cos is - there.

So I think you are correct.

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