# trig

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identify the quadrant in which 0 lies.

sin < 0 and sec > 0

• trig -

sin negative, cosine positive?

sin is negative III, IV
cosine positive I, III

• trig -

Sin < 0-----> quadrant 3 and 4

Sec > 0 ---- quadrant 1 and 4

sec = 1/cos

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