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-   -   Verifying identities (https://www.askmehelpdesk.com/showthread.php?t=644786)

  • Mar 20, 2012, 07:18 AM
    mitzie09
    verifying identities
    I need equation for this: sinx/(1-cosx) + tan x/(1 + cosx). The answer must be (cos^2x + 1)/(sinx cosx).has something to do with verifying identities.
  • Mar 20, 2012, 08:05 AM
    ebaines
    If you convert the tanx to sinx/cosx, then with a little algebraic manipulation you can get the left hand side to be equal to the right hand side. Hint - multiply the first fraction on the left hand side by (1+cosx)/(1+cosx) and the second fraction by (1-cosx)/(1-cosx), then combine.

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