You are Here: Home >< Maths

# C4 question help Watch

1. the first part of the 7(i) its asking to show that theta is equal to beta - alpha and I am struggling to understand how to do it. help!!
2. (Original post by chrisgul)

the first part of the 7(i) its asking to show that theta is equal to beta - alpha and I am struggling to understand how to do it. help!!
What do you know about angles in a triangle?

You know two of the angles in the triangle, what is the third angle in the triangle in terms of the other two?

What do you know about angles in a straight line?

Does that help?
3. theta+alpha+(180-beta)=180 (Angles in a triangle add up to 180 degrees)
so theta+alpha-beta=0
so theta=beta-alpha

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 30, 2016
Today on TSR

### Falling in love with him

But we haven't even met!

### Top study tips for over the Christmas holidays

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• 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

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.