IM3 STEM TRIG PROPERTIES

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6 Terms

1
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sin(2x)

2sinxcosx

2
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cos(2x)

cos²x - sin²x

3
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tan(2x)

 2tanx/(1-tan²x)

4
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sin(x/2)

5
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cos(x/2)

6
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tan(x/2)

sinx/(1+cosx) or (1-cosx)/sinx