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-   -   Precalculus- verifying identities cheat help? (https://www.askmehelpdesk.com/showthread.php?t=569431)

  • Apr 10, 2011, 08:34 PM
    ellecb
    precalculus- verifying identities cheat help?
    verify the given identity
    cosx+sinxtanx=secx
  • Apr 10, 2011, 09:24 PM
    jcaron2
    Rewrite tan in terms of sin and cos. That will give you a fraction for the second term (with a sin^2 in the numerator). Now add the two terms on the left side of the equation; you'll need to get a common denominator. Now notice that you have sin^2 + cos^2 in the numerator. What does that equal?

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