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11 Terms
1
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sin (A + B)
sin A cos B + cos A sin B
2
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sin (A - B)
sin A cos B - cos A sin B
3
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tan (A + B)
\frac{\left(\tan A+\tan B\right)}{\left(1-\tan A\tan B\right)}
4
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tan (A - B)
\frac{\left(\tan A-\tan B\right)}{1+\tan A\tan B}
5
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sin 2A
2 sin A cos A
6
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cos 2A (1)
cos² A - sin² A
7
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cos 2A (2)
2 cos² A - 1
8
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cos 2A (3)
1 - 2 sin² A
9
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sin (A/2)
±\sqrt{\frac{\left(1-\cos A\right)}{2}}
10
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cos (A/2)
±\sqrt{\frac{\left(1+\cos A\right)}{2}}
11
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Note 
Flashcards (100)