3.12 AP pre calculus property equations

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6 Terms

1
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What are the 3 Pythagorean identities?

  1. cos²θ+sin²θ=1

  2. 1+tan²θ=sec²θ

  3. 1+cot²θ=csc²θ

2
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what are the inverse trigonometry identities

arccos(x)=arcsin*sqrt(1-x²)

arcsin(x)=arccos*sqrt(1-x²)

3
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What are the sum and difference identities for what sin is equal to?

sin(A+B)=sin(A)cos(B)+cos(A)sin(B)

sin(A-B)=sin(A)cos(B)-cos(A)sin(B)

4
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What are the sum and difference identities for what cos is equal to

cos(A+B)=cos(A)cos(B)-sin(A)sin(B)

cos(A-B)=cos(A)cos(B)+sin(A)sin(B)

5
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What is the sine double angle identities formula

sin(2A)=2sinAcosA

6
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What are the cos double angle identities formula

cos(2A)=cos²(A)-sin²(A)

cos(2A)=1-2sin²(A)

cos(2A)=2cos²(A)-1