Asked by Anne

Complete the following identity secx-1/secx=? I have four multiple choice options and can't seem to work my way to either one. A) secx cscx B)1+cotx C)sinx tanx D)-2tan^2x
Answered by drwls
Is the numerator of the fraction 1 or (secx -1)?
Answered by drwls
secx - (1/secx) = sec x - cos x
= [1 - cos^2x]/cos x
= sin^2x/cosx
= tanx*sinx

The choice is C
Answered by shoaib
Its Answer is secx-cosx
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