Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Trig proof with two angles and many functions

  1. Jun 19, 2011 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations
    cotx=1/tanx, etc.
    I tried using pythagorean identities, like 1+cot2x=csc2x, and others, but I've been unable to solve the problem.

    3. The attempt at a solution
    Please help me out. The examples in my text book don't seem very useful here. I've tried everything I could think of.
  2. jcsd
  3. Jun 19, 2011 #2


    User Avatar
    Homework Helper

    You need to show some work, but here's a big hint. Start from the right side. Convert everything in terms of sines and cosines. You'll have a complex fraction. Add the two fractions in the numerator, and then add the two fractions in the denominator. Take it from here.
  4. Jun 19, 2011 #3
    Thanks. I finally figured it out.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook