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10/16/2013 4:08:06 PM
16
How do sin(x) and cos(x) work?
When I enter cos(45) into a calculator, what calculations are being made?
And don't say 1/sec(x) or equivalent trig. identities.
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Edited by Simseo: 10/16/2013 4:16:01 PMThis the graph of y=sin(x). Suppose you want the value of sin(45), you look for the value of x=45, then find the equivalent y value. That y value is the value of sin(45), as y=sin(x). For example, when x=90, y=1. Therefore sin(90)=1 That is how I remember it.
