Asked by rachel
If you know the sine of a number, how do you find its cosine?
Answers
Answered by
Steve
recall that most fundamental of all trig identities
sin^2 + cos^2 = 1
burn that into your brain in letters of fire. It is indispensable!
sin^2 + cos^2 = 1
burn that into your brain in letters of fire. It is indispensable!
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