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# Integration of cos^3 x

There are many methods to integrate $\sin^3 x$.

## 1. Use trigonometric identity

Given that  $\sin (3x)=3\sin x - 4 \sin^3 x$, $\sin^3 x = \frac{1}{4} [3\sin x - \sin (3x)]$

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## Old Syllabus STPM Book For Sale

I am selling all the old STPM books for RM5 each. Please contact me if you are interested.

## Complex Number Problem 1

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## Pelangi MT Chapter 6 Revision Exercise Q17

The position vectors of point and relative to origin , are given by and...

## MT Chapter 15 Booklet Page 23 Question 2

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#### KK LEE

KK LEE has been a STPM Mathematics tuition teacher since June 2006, but his love of Maths dates back to at least 1999 when he was Form 4. KK LEE started teaching in 2006 at Pusat Tuisyen Kasturi. He was known as "LK" when he was teaching in PTK. After teaching STPM Mathematics for 8 years in PTK, he joined Ai Tuition Centre in 2014. Over the years he has taught Mathematics (T), Mathematics (S), Mathematics (M), Additional Mathematics.