Asked by CJ
Verify the identity: cos x + sin x tan x = sec x.
Answers
Answered by
Reiny
LS = cosx + sinx(sinx/cosx)
= (cos^2x + sin^2x)/cosx
= 1/cosx
= sec x
= RS
= (cos^2x + sin^2x)/cosx
= 1/cosx
= sec x
= RS
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