Tag Archives: Trigonometry

Trigo Formulae

The following formulae will be useful when integrating Trigonometric functions. Taken from the MF15 formula sheet for JC. Addition Formulae Double Angle Formulae Remark: The second identity is useful for integrating and . Factor Formulae Remark: The factor formulae are … Continue reading

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Topics coming out for A Maths Paper 2

Recently, the A Maths Paper 2 just finished (today), and the A Maths Paper 2 is hot on its heels, coming tomorrow! Usually, topics tested in Paper 1 will most likely not come out again in Paper 2, so students doing … Continue reading

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Challenging O Level Trigonometry Question (A Maths)

A reader of our Mathtuition88.com blog asked the following Maths question: Given that and , where , express in terms of . This is a rather challenging question, since there are many options to start. Which formula(s) should we use? … Continue reading

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Mr Bean Calculus and Trigonometry Math Exam

For O Levels, we need to be proficient in both Calculus (Differentiation and Integration), AND Trigonometry! Students need to revise early to avoid being like Mr Bean!

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sin(180-x)

Trigonometry Identities Negative angles:         (Still Positive!) Reason: is in the “C” quadrant so Cosine is still positive. Supplementary angles:         (Still positive!) Reason: is in the “S” quadrant so Sine is still positive. Complementary angles: Reason:

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How to Remember Trigonometric Special Angles easily using Calculator

How to Remember Special Angles easily using Calculator Step 1: Type the expression into calculator, eg. (in radian mode, for this case) Step 2: You will get 0.8660254038. Square the Answer. (Ans^2) Step 3: You will get 3/4. That means

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Challenging Trigonometry Question (ACS(I) Sec 3)

Solution: (a) Using the formula, Cross-multiply, (b) The trick here is to break up into Range: Since is acute (1st quadrant), is positive.  

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积少成多: How can doing at least one Maths question per day help you improve! (Maths Tuition Revision Strategy)

We all know the saying “an apple a day keeps the doctor away“. Many essential activities, like eating, exercising, sleeping, needs to be done on a daily basis. Mathematics is no different! Here is a surprising fact of how much … Continue reading

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A Maths Tuition: Trigonometry Formulas

Many students find Trigonometry in A Maths challenging. This is a list of Trigonometry Formulas that I compiled for A Maths. Students in my A Maths tuition class will get a copy of this, neatly formatted into one A4 size … Continue reading

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