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Prove that

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(2 sin 2x) / (2+2cos2x) = tan x?

trigonometric-identities

asked Aug 14, 2014 in TRIGONOMETRY by anonymous

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1 Answer

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Left hand side identity : 2sin2x/(2+2cos2x)

=2sin2x/2(1+cos2x)

=sin2x/(1+cos2x)

=2sinxcosx/2cos²x

=sinx/cosx

=tanx

=Right hand side identity

answered Aug 14, 2014 by bradely Mentor

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