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-   -   Verify the identity (https://www.askmehelpdesk.com/showthread.php?t=610293)

  • Nov 7, 2011, 04:52 PM
    kosmo15
    Verify the identity
    (2cotx)/(cotx tan x) = 2cos(squared)x
  • Nov 7, 2011, 10:27 PM
    Unknown008
    Convert the cot and tan ratios on the left to sine and cosine ratios. Then try to remove the denominator on the left.

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