In this revision note, you will learn the Trigo R-formula and how to apply it to solve common O-levels A-Math questions. Before you read on, you might want to download this entire revision notes in PDF format to print it out, or to read it later.

In my years of teaching, I have also come across schools which have insisted students to understand and use the full derivation of R-formula to solve the questions.

Jan 30, 2013 · Content: Full working on the derivation of R-Formula. In some schools, students can apply the two formulas directly but in other schools, some students must ...

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Oct 7, 2008 · Express OM in the form OM = R cos (θ + α) and calculate the values of R and α. In the diagram, state the line with a length of R cm and the angle with a value α. Express AM in terms of R and (θ + α) and show that the area of triangle OAM is 10 sin 2 (θ + α).

The R−Formula allows an expression involving the sum (or difference) of sine and cosine functions to be expressed as a single trigonometric function in sine or cosine. In general, where a > 0, b > 0, α is acute, R = √ (a 2 + b 2 ) and α=tan -1 ⁡ (b/a).

Jun 20, 2021 · Here’s a summary of Trigonometry for O Level Additional Mathematics. I go through what’s tested in this article here. Assumed Trigonometry Knowledge for O Level Add Math: For right angle triangles: sin x = opposite/ hypotenuse; cos x = adjacent/ hypotenuse; tan x = opposite/ adjacent; Pythagoras Theorem: (hypotenuse) 2 = (opposite) 2 ...

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In this O-level Math formula sheet, you will learn all the formulas needed for O-level math exams. Keep this formula sheet with you as a useful companion when solving O-level Math questions. All the formulas are sorted according to the following chapters so …

I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way.