5 marks, showing qn. Another question from GCE O Level Additional Mathematics (A-Math).
:)
Related Posts:
- Logarithm Equation Question 3
- A-Math: Differentiation & Integration Application : Examples of Typical Kinematics Questions
- Simultaneous Eqns, Vectors, Gradient of Normal, Binomial
- A Goodie For You! Monthly Math Exam Papers Questions (With Answer Key Included)
- Download Your FREE Introductory Copy of O Level Additional Mathematics Topical Real Exam Questions (TREQ) Book
circular measure · Exam Questions
3 comments
Leave a Reply
<< Hello!
Lustrous Realm · October 6, 2007 at 2:54 pm
You can form 2 equilateral triangles within the shaded region itself and the length of each side is 2r.
Next is to find the total area of these 2 triangles. You can use the equation half x base x height. The base is 2r and the height can be found with pythagoras theorem.
Since we know that there are 2 equilateral triangles, we will know that the angle is 120 degrees. Thus, find the area of the sector now using the formula half x radius squared x theta. The theta is 120 x pi divide 180.
Use this value to minus off the total area of the 2 equilateral triangles found earlier. Name this value x.
The answer can then be proven by the following expression:
2x + Total Area of the 2 equilateral triangles.
Good luck to you in your Prelims XD
Reply
Rachel · February 1, 2008 at 10:27 pm
Well your question is not really that hard. There are question harder than that:P
Reply
waleed · February 6, 2010 at 9:02 pm
can u show scanned working………plus proving.
Reply