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terenzreignzBest ResponseYou've already chosen the best response.0
You'd do well to recall that \[\Large \sin(2\alpha) = 2\sin(\alpha)\cos(\alpha)\]
 11 months ago

AonZBest ResponseYou've already chosen the best response.1
btw the double angle formula is in a ratio is 2 to 1. just remember that :) sin4x = 2 sin2x cos2x
 11 months ago
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