Monday, June 22, 2015

[AM_20150621TGSCQT] sin and cos Embroiled in some Quadratic

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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