How do you verify the identity: $sec x - cos x = sin x tan x$ ?

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Answer 1 · 2015-04-23T15:52:41

It can be prooven by transforming right side of the equality to the left.

$R = sinx*tanx=sinx*sinx/cosx=sin^2x/cosx=(1-cos^2x)/cosx=1/cosx-cosx=secx-cosx=L$

QED

How do you verify the identity: sec x - cos x = sin x tan xsec x - cos x = sin x tan x?