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-   -   Help verify this trig identity? (cscB/sinB)-(cotB/tanB) = 1 (https://www.askmehelpdesk.com/showthread.php?t=595919)

  • Sep 5, 2011, 01:17 PM
    antoniarose
    Help verify this trig identity? (cscB/sinB)-(cotB/tanB) = 1
    I have tried so many times to verify this identity but I can't do it! If you have any ideas, please let me know, and if you know how to do it, the steps would be greatly appreciated! Thank you! Please help!

    (cscB/sinB)-(cotB/tanB) = 1
  • Sep 5, 2011, 08:06 PM
    jcaron2
    I can see why you're having such difficulty! It's not a true statement. If you rewrite everything in terms of sines and cosines (which is always a good first step when trying to prove trig identities), you get the following:









    That's only true when or . That does not a trig identity make!

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