trig eq

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Last updated 1:14 PM on 4/16/26
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6 Terms

1
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sin(a+b)

sina cosb+cosa sinb

2
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sin(a-b)

sina cosb-cosa sinb

3
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cos(a+b)

cosa cosb - sina sinb

4
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cos(a-b)

cosa cosb +sina sinb

5
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tan(a+b)

tana+tanb/1-tana tanb

6
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tan(a-b)

tana-tanb/1+tana tanb