Trig Function Identities
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Last updated 6:20 PM on 2/23/26
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11 Terms
1
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sin —- (Reciprocal)
1/csc
2
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cos —- (Reciprocal)
1/sec
3
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tan —- (Reciprocal)
1/cot
4
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csc —- (Reciprocal)
1/sin
5
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sec —- (Reciprocal)
1/cos
6
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cot —- (Reciprocal)
1/tan
7
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tan —- (Quotient)
sin/cos
8
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cot —- (Quotient)
cos/sin
9
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sin2 + cos2 = ….. —- (Pythagorean)
1
10
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1 + cot2 = ….. —- (Pythagorean)
csc2
11
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tan2 + 1 = ….. —- (Pythagorean)
sec2