Trig Idenites
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Last updated 11:36 PM on 12/3/24
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8 Terms
1
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What is the reciprocal identity for sin(x)?
sin(x) = 1/csc(x)
2
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What is the Pythagorean identity for sin(x) and cos(x)?
sin^2(x) + cos^2(x) = 1
3
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What is the double-angle formula for sin(2x)?
sin(2x) = 2sin(x)cos(x)
4
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What is the double-angle formula for cos(2x)?
cos(2x) = cos^2(x) - sin^2(x)
5
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What is the half-angle formula for sin^2(x)?
sin^2(x) = (1 - cos(2x))/2
6
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What is the derivative of arcsin(x)?
d/dx[arcsin(x)] = 1/sqrt(1-x^2)
7
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What is the Pythagorean identity involving tan(x)?
1 + tan^2(x) = sec^2(x)
8
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What is the double-angle formula for tan(2x)?
tan(2x) = 2tan(x)/(1 - tan^2(x))
