trig identities

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11 Terms

1
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sin2x + cos2x

1

2
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1- cos2x

sin2x

3
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1 - sin2x

cos2x

4
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1 + cot2x

csc2x

5
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1 + tan2x

sec2x

6
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sin(a + b)

sinacosb + cosasinb

7
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cos(a + b)

cosacosb - sinasinb

8
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sin(a - b)

sinacosb - cosasinb

9
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cos(a - b)

cosacosb + sinasinb

10
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sin(2u)

2sinucosu

11
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cos(2u)

cos2u - sin2u