June 15th, 2008, 10:59 PM
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Quote:
Originally Posted by Reckoner  A mnemonic that is sometimes used for the signs is:
All - All three (sin, cos, and tan) are positive in QI
Students - Only sin is positive in QII
Take - Only tan is positive in QIII
Calculus - Only cos is positive in QIV | Adding/Changing something to this:
A mnemonic that is sometimes used for the signs is: All - All six (sin, cos, tan, sec, csc, and cot) are positive in QI Students - Only sin and csc is positive in QII Take - Only tan and cot is positive in QIII Calculus - Only cos and sec is positive in QIV
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