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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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Sin is sin. It's a relationship between side ratios and angles on a right triangle. When you type it into your calculator, it's probably doing a table look up for values and using fourier series to fill in the blanks.
