Trig Identities

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5 Terms

1
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1

sin2 θ + cos2 θ = 1

2
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sec2θ

1+tan2θ

3
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csc2θ

1+cot2θ

4
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sin (a+b)

sin(a)cos(b) + cos(a)sin(b)

5
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cos(a+b)

cos(a)cos(b) - sin(a)sin(b)

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