Trig Identities

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10 Terms

1
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Sin²x + Cos²x

1

2
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1 + tan²x

sec²x

3
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1 + cot²x

csc²x

4
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2Sinx * Cosx

Sin2x

5
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Cos²x - Sin²x

Cos2x

6
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2Cos²x - 1

Cos2x

7
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1 - 2Sin²x

Cos2x

8
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2tanx / 1 - tan²x

tan2x

9
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√((1 - cosx)/2)

Sin(x/2)

10
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√((1 + cosx)/2)

Cos(x/2)