Wednesday
March 22, 2017

Post a New Question

Posted by on Monday, January 7, 2013 at 5:02pm.

Prove that
tanx+cotx=2sec(2x)

Thank you! :)

  • Trigonometry - , Monday, January 7, 2013 at 5:14pm

    LS = sinx/cosx + cosx/sinx
    = (sin^2 x + cos^2 x)/sinxcosx
    = 1/(sinxcosx)
    = 2/(2sinxcosx)
    = 2/sin (2x)
    = 2csc (2x)

    Your RS = 2sec(2x) which is incorrect

    Did you have a typo?

  • Trigonometry - , Monday, January 7, 2013 at 5:26pm

    Yes I had a typo. Thank you!!

    (I don't know how to respond to answers besides this....)

  • Trigonometry - , Monday, January 7, 2013 at 6:03pm

    Why

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question