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Mathematics 11 Online
OpenStudy (anonymous):

sin2x=_____ A. 2sinx+2cosx B. 1-2sin^2x C. 2sinx cosx D. 1/2 (cos(a-b)- cos(a+b))

jimthompson5910 (jim_thompson5910):

sin(2x) = 2sin(x)cos(x) for all values of x

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