#12 4.04 questions Precalculus

label Mathematics
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May 14th, 2015

(a) sec(t) > 0 <=> cos(t) > 0, then sin(t) = cos(t)/cot(t) < 0.
cos(t) > 0, sin(t) < 0 in 4th quadrant.

(b) csc(t) < 0 <=> sin(t) < 0, cos(t) = sin(t)/tan(t) < 0.
cos(t) < 0 and sin(t) < 0 in 3rd quadrant.

May 14th, 2015

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May 14th, 2015
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