(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

for what values of x is cos(x) - sin(x) < cox(x) + sin(x) where 0 =< x =< 2pi

2. Relevant equations

none.

3. The attempt at a solution

I actually drew out the funtions and added them.

In my graphs, I get that:

cos(x) - sin(x) < cos(x) + sin(x) for for 0 =< x =< pi

When I try to show this in Matlab, i ger messy results?

Any ideas?

**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!

# Trig sums

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