Halloo everyone,

Well, Form 5 students should be learning Chapter 5 in their Add Math now. I heard many complaints from students “tak faham la teacher.”

So I’m going to make a series of video tutorials on this chapter to help everyone

**The most important thing in this Chapter that you must master** is **Sketching the graphs **of Sine, Cosine and Tangent. For the past few years, there were questions on Sketching Graph in SPM Paper 2 and the question always carry 7 marks, sometimes even 10 marks.

I have made 3 video tutorials on sketching graphs.

Here’s Video 1

**Click here for Video 2 on How to Sketch Trigo Graphs**

**Click here for Video 3 on How to Sketch Trigo Graphs - Answering SPM 2007 Question**

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hi,miss Ng..can u help me to solve this question by showing me the working step?

2.A straight line with gradient k passes through the point(4,5).It meets the X-axis and y- axis at p and Q respectively.

a.)find the equation of straight line PQ in term of k.

b.)given the area of triangle OPQ is 20k-25/2k-8k,find the value of k when the area of triangle OPQ is minimum.

Hi, Miss Ng.I am university students,now I am study in Foundation..Since Form 4 I didn’t take additional mathematics this subject.When I study in Foundation, the mathematics are all add maths….now left 2 more weeks I have to sit final exam…But the differentiation and integration I still don’t know how to do…I have no basic.. Can teach me some basics?

Hi Penny, how can I help you since it’s only 2 weeks to your finals? You can email or call me to discuss.

Miss Ng, can you help me to solve these trigonometric equations for 0º≤x≤360º?

1) 2sin²x + sinx = 0

2) cos²x – 3 sinx cosx = 0

3) 3 sinx = tanx

thank you miss eng!this is my first time watching your vedios in your web.you help me a lot.:D