How to tell if the sine, cosine and tangent of a angle are negative or positive?

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24-08-2017
Mathematics

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How to tell if the sine, cosine and tangent of a angle are negative or positive?

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ghanami ghanami · Answer 1 · 2017-08-24T10:04:29+02:00

ghanami ghanami

24-08-2017

hello :
1 ) the 1 quadrant : the sine, cosine and tangent are  positives
2) the 2  quadrant : the sine is positive but cosine and tangent are negatives
3 ) the 3 quadrant : the tangent is positive but cosine and  sine  are negatives
4 ) the 4 quadrant : the cosine is positive but tangent and  sine  are negatives

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