You are Here: Home >< Maths

# Edexcel C3 Question watch

Announcements
1. I have a homework question where I have to fully simplify:

I have simplified this to:

The answer given in the book is:

Can anyone help with the steps?
2. From your expression I'd just rewrite everything in term so sin/cos and cancel down. It should be easy to go back to the tan t sec t form at the tend.
3. yeah. Also, when you have the inverse trig functions such as cot on the bottom, you should know to simplify by putting the normal function on top.
4. (Original post by Darth_Narwhale)
yeah. Also, when you have the inverse trig functions such as cot on the bottom, you should know to simplify by putting the normal function on top.
isn't an inverse trigonometric function.
5. (Original post by RDKGames)
isn't an inverse trigonometric function.
Yeah I know, I thought someone would pick me up on that . Is reciprocal function a better term?
6. (Original post by Darth_Narwhale)
Yeah I know, I thought someone would pick me up on that . Is reciprocal function a better term?
Yep
7. I keep ending up with:

8. (Original post by bendent1234)
I keep ending up with:

9. (Original post by RDKGames)

Oh of course it is

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: January 29, 2017
Today on TSR

### Official 2019 Cambridge Interview Thread

Discuss upcoming interviews...

### University open days

• Heriot-Watt University
School of Textiles and Design Undergraduate
Fri, 16 Nov '18
• University of Roehampton
Sat, 17 Nov '18
• Edge Hill University
Faculty of Health and Social Care Undergraduate
Sat, 17 Nov '18
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