if your looking at a circle, all the angles are relative to the x axis.
so pi/6 is the same amount as 5pi/6 or 7pi/6 and 11pi/6
all are positive in quadrant 1
sin is positive in 2
tan in 3
and cos in 4.
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| Topic | how to solve this trig/calc problem? |
| Colegreen_c12 10/02/11 8:39:00 PM #7: |
if your looking at a circle, all the angles are relative to the x axis.
so pi/6 is the same amount as 5pi/6 or 7pi/6 and 11pi/6 all are positive in quadrant 1 sin is positive in 2 tan in 3 and cos in 4. ... Copied to Clipboard! |
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