**Question**

**Introduction**

This is a bonus
question from another version of a test set by Hwa Chong Institution this year (2015). It turns out that different students take the
test at different dates, and the school took the trouble to set different
versions of the test. They have the manpower
resources to do that!

It is good
to know what topics each question involves.
In this example, students’ knowledge of quadratic theory

*and*trigonometry are being tested in a combined fashion. Let us first review the relevant material.**Reminders**

**Solution**

H04. Look for
pattern(s)

H05. Work
backwards

H09. Restate
the problem in another way

H10. Simplify
the problem

H11. Solve part
of the problem

H13* Use
Equation / write a Mathematical Sentence

**Suitable Levels**

*****GCE ‘O’ Level Additional Mathematics

* other syllabuses that involve
trigonometry

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