Trig Identities
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Last updated 2:14 PM on 9/22/26
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4 Terms
1
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cos²(x)
1-sin²(x)
2
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sec²(x)
1+
3
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tan²x
sec²x-1
4
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sin^n(x)cos^m(x) (if both even)
(1/2(1-cos(2x)))^n/2(1/2(1+cos(2x))^m/2