You are Here: Home >< Maths

# Trignometry Question - Help please

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016

1. The diagram shows a rhombus ABCD. Points P and Q lie on the diagonal AC such that BPD is an arc of a circle with centre C and BQD is an arc of a circle with centre A. Each side of the rhombus has length 5 cm and angle BAD = 1.2 radians.

Find the area of the shaded region BPDQ.
Find the length of PQ.

For the first Question, I get that I have to find the total area of the two sectors and subtract the triangles. However there's some overlap between the sectors, how do I figure out how much?

I'm totally lost on the second part aswell. I tried splitting APB into a right angled triangle with AP and the midpoint of AB to get the length of AP but not sure what to do after that.

Someone help with steps if possible please.
2. For the first question, add the areas of the 2 sectors and subtract the area of the rhombus. For the second question, add the radii of the sectors and subtract the length of the diagonal AC.
3. Thanks!

Any ideas on the second quest?

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 8, 2012
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:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams