x Turn on thread page Beta
 You are Here: Home >< Maths

# Help on a trigonometry question watch

1. Does anyone know how to solve this question?

-for what values of x in the interval [0,2Pi] is arccos(sin3x+cos2x) defined?

Sorry for my ignorance but I will really appreciate any kind of help, thank you.
2. is defined when , and so your function is defined when . You need to work out the values of for which this happens.
3. (Original post by Klra)
Does anyone know how to solve this question?

-for what values of x in the interval [0,2Pi] is arccos(sin3x+cos2x) defined?

Sorry for my ignorance but I will really appreciate any kind of help, thank you.
Recall that is only defined for . So essentially you need to solve , which I think will be a little messy.

EDIT: Yet again, beaten to it by nuodai...
4. Hmm... Thanks I think I'm getting there.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 9, 2011
Today on TSR

### I've studied the wrong subject

...Should I go back to school?

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams