Double angle formulas 0.0 / 5 ? MathematicsTrigonometry and radiansA2/A-levelAll boards Created by: IsabelleBryantCreated on: 27-05-16 11:07 sin2x 2sinxcosx 1 of 8 cos2x cos^2x-sin^2x = 1-2sin^2x = 2cos^2x-1 2 of 8 sin^2x 1/2(1-cos2x) 3 of 8 cos^2x 1/2(1+cos2x) 4 of 8 tan2x (2tanx)/1-tan^2x 5 of 8 sec^2x tan^2x+1 6 of 8 cosec^2x 1+cot^2x 7 of 8 Sin^2x+cos^2x 1 8 of 8
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