(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Trig Question

1. The problem statement, all variables and given/known data

Let's say I have [tex]tan(2\theta) = cot(\phi)[/tex] I'm not quite sure how to simplify it (I want to solve for theta) I could say [tex]tan(2\theta) = 1 / tan(\phi)[/tex]

[tex]2\theta = atan( 1 / tan(\phi) ) [/tex] but then I'm not sure what to do after that.

Do I take the atan of 1 and [tex]tan(\phi)[/tex]?

I know another method to find it is to say [tex]cot(\phi) = \pi/2 - tan(\phi)[/tex] but I don't understand that either because [tex]2\theta = atan( \pi/2 - tan\phi ) != \pi/2 -\phi [/tex] (not exactly at least)

The answer as far as I know is supposed to be [tex]2\theta = \pi/2 -\phi [/tex]

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Trig theta Question

**Physics Forums | Science Articles, Homework Help, Discussion**