Unit 3 - Trigonometric Identities
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14 Terms
1
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sin²(x) + cos²(x)
1
2
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tan²(x)
sec²(x) - 1
3
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csc²(x)
cot²(x) + 1
4
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sin(x + y)
sin(x) * cos(y) + cos(x) * sin(y)
5
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sin(x - y)
sin(x) * cos(y) - cos(x) * sin(y)
6
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cos(x + y)
cos(x) * cos(y) - sin(x) * sin(y)
7
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cos(x - y)
cos(x) * cos(y) + sin(x) * sin(y)
8
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sin(2x)
2 * sin(x) * cos(x)
9
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cos(2x)
cos²(x) - sin²(x)
10
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1 / sec(x)
cos(x)
11
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1 / csc(x)
sin(x)
12
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1 / cot(x)
tan(x)
13
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csc²(x)
csc(x) / sin(x)
14
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sec²(x)
sec(x) / cos(x)