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Mathematics 21 Online
OpenStudy (anonymous):

what quadrant is sinθ>0 and cosθ< 0

OpenStudy (anonymous):

1st quadrant for sin theta <0 and 3rd quadrant for cos theta <0

OpenStudy (anonymous):

Excuse me; 2nd* quadrant for cos theta <0

OpenStudy (anonymous):

So what would both be located in?

OpenStudy (anonymous):

1st Quadrant: - sin θ > 0 - cos θ > 0 - tan θ > 0 2nd Quadrant: - sin θ > 0 - cos θ < 0 - tan θ < 0 3rd Quadrant: - sin θ < 0 - cos θ < 0 - tan θ > 0 4th Quadrant: - sin θ < 0 - cos θ > 0 - tan θ < 0 u can remember it by labelling each quadrant a letter and writing a sentence for it e.g. ASTC= All Stations To Central A= all angles > 0 S= only sin θ > 0 T= only tan θ > 0 C= only cos θ > 0

OpenStudy (anonymous):

Try to figure it out by using this. Location of quadrant is where I would get stuck on.

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

Just got it. Both should be in the 2nd Quadrant.

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