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    ellecb's Avatar
    ellecb Posts: 1, Reputation: 1
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    #1

    Apr 10, 2011, 08:34 PM
    precalculus- verifying identities cheat help?
    verify the given identity
    cosx+sinxtanx=secx
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #2

    Apr 10, 2011, 09:24 PM
    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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