Index
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Trigonometry
Matching exercise
Match the items on the right to the items on the left.
Check
OK
2cos A cosB
– 2sin A sin B
2sin A cos B
2 cos A sin B
cos ( A + B) + cos ( A – B)
cos (A + B) – cos (A – B)
sin (A + B) + sin (A – B)
sin (A + B) – sin (A – B)