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-   -   How to prove (https://www.askmehelpdesk.com/showthread.php?t=654542)

  • Apr 25, 2012, 11:03 PM
    prawn
    how to prove
    prove : 1/cotA + cosecA = cotA - cosecA
  • Apr 26, 2012, 06:31 AM
    ebaines
    Quote:

    Originally Posted by prawn View Post
    prove : 1/cotA + cosecA = cotA - cosecA

    Your formula has an error:



    However, the following is true:



    To prove it start by replacing the cot(A) and csc(A) functions with their sine and cosine equivalents, then simplify - for example on the left hand side multiply numerator and denominator by sin(A).

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