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vivianhuynh99x vivianhuynh99x
  • 19-02-2017
  • Mathematics
Answered

how to simplify tan(x)/ cos(x)-sec(x)

Verified Answer :

ChandrikaP ChandrikaP
  • 20-02-2017

 tan(x)/ cos(x)-sec(x)
tanx/(cosx-1/cosx)
tanx/cos^2x-1)--------------------1-sin^2x=cos^2x
-tanx/sin^2x
-(sinx/cosx)/sin^2x
-1/sinxcosx
multiply 2/2
-2/2sinxcosx-------------sin2x=2sincosx
-2/sin2x------------------1/sinx=cosecx
-2cosec2x

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