trig identities

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Last updated 3:43 AM on 5/12/26
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6 Terms

1
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Sin(2x)

2SinxCosx

2
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Cos(2x) #1

Cos²x-Sin²x

3
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Cos (2x) #2

1-2Sin²x

4
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Cos(2x) #3

2Cos²x-1

5
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Sin(a+b)

Sin(a)Cos(b)+Cos(a)Sin(b)

6
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Cos(a+b)

Cos(a)Cos(b)-Sin(a)Sin(b)