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  • Jan 6, 2011, 11:15 AM
    chrisw1704
    can anyone prove that:
    sec x (1 tan x/sec x)/tan x sec x = 1
  • Jan 7, 2011, 09:51 AM
    ebaines
    Quote:
    Originally Posted by chrisw1704 View Post
    sec x (1 tan x/sec x)/tan x sec x = 1
    No - because your equation is incomplete (it seems to be missing a couple of plus or minus signs). Please retype it. But here's a hint how to proceed: replace secx with 1/cosx, and tanx with sinx/cos.

    By the way - I'm wondering if that second secx in your equation shouldn't be cscx instead?

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