Question

$prove2sinx = 2sinx.cosx = 2tanx \div 1 + {tan}^{2} x$
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Answer 1

Answer:

$\sin(2x) = 2 \sin( x ) \cos(x) \\ we \: know \: that \: \\ \sin(2x) = \sin(x + x) \\ = \sin(x) \cos(x) + \cos(x) \sin(x) \\ = 2 \sin(x) \cos(x) \: \: hence \: prove$