AP PreCalc / Inverse Trigonometric Identities (arccos(cos)) or (arcsin(sin))
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Last updated 3:08 AM on 8/27/25
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6 Terms
1
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Formula for finding sin-1(sin(π))
sin(π - x) = sin x
2
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Formula for finding cos-1(cos(π))
cos(2π - x) = cos x
3
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Formula for finding tan-1(tan(π))
tan(π + x) = tan x
4
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SOLVE: sin-1(sin(7π/6))
sin(π - 7π/6) = sin(-π/6)
5
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SOLVE: cos-1(cos(7π/6))
cos(2π - 7π/6) = cos(5π/6)
6
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SOLVE: tan-1(tan(7π/6))
tan(π + 7π/6) = tan(13π/6) = tan(π/6)
Note 
Flashcards (23)