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

    Dec 2, 2013, 02:03 PM
    prove tan x + cot x / csc x= sec x
    i was wondering how you prove this equation
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Dec 2, 2013, 02:22 PM
    As usual with these types of problems your first step is to convert the tan, cot, sec, and csc functions into their sin and cos equivalents. Then it's a matter of simplifying and looking for opportunities to apply other well-known identities such as sin^2x + cos^2x = 1.

    By the way, what you wrote is this:

    .

    but I'm pretty sure what you actually meant is this:



    Please use parentheses to avoid confusion.
    neodarwinian's Avatar
    neodarwinian Posts: 74, Reputation: 1
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    #3

    Dec 2, 2013, 03:29 PM
    Not a real equation but an identity.

    Use your identities on the inside of the text cover and follow the other answer that was given.
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