Calc 2 Equations

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6 Terms

1
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Product to sum cos x cos

(1/2)[cos(a-b)+cos(a+b)]

2
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Product to sum sin x sin

(1/2)[cos(a-b)-cos(a+b)]

3
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Product to sum sin x cos

(1/2)[sin(a+b)+sin(a-b)]

4
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Pythagorean tan and sec

Tan^x+1=sec²x

5
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Pythagorean sin and cos

Sin²x+cos²x=1

6
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Trig Identities

A²-x² = (a/b)sinx

A²+x²= (a/b)tanx

X²-a²= (a/b)secx