Trigonometric Identities Ch. 7
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Last updated 12:46 AM on 3/22/26
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9 Terms
1
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Pythagorean Identity 1: sin²+cos²=
1
2
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Pythagorean Identity 2: tan²0+1=
sec²0
3
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Pythagorean Identity 3: 1+cot²0=
csc²0
4
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Cos (-x)=
cos(x)
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sec(-x)=
sec(x)
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sin(-x)=
-sin(x)
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tan(-x)=
-tan(x)
8
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csc(-x)=
-csc(x)
9
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cot(-x)=
-cot(x)
