HSC Standard Maths Resources

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4. Trigonometry

Trigonometry is another favorite topic of examiners. You are almost certain to expect a question from this topic as seen in the overview section. In 2020 exam, three questions appeared from this topic making up 13 marks (2020Q16, 2020Q312020Q32) so there is no question you need to take this topic seriously. This section covers following parts of the syllabus:

 MS-M3 Right-angled Triangles

 MS-M6 Non-right-angled Trigonometry

Trigonometry questions are easy if they are asked in isolation with one diagram which is what you can expect in part 1 of the exam, however, things can get tricky easily and there is huge potential for a complicated question to come from this topic with complex diagram. Things also start to get tricky when bearing and trigonometry are combined to make a question.

The infographic below shows all the past exam questions from 2010 to 2020 relevant to this topic sorted by difficulty level and further broken down into sub-topics. This will form the foundation of our study as we would like you to focus first on the easy questions and quickly develop skills to get those easy marks and then challenge yourself with the harder ones.

There are four sub-sections you need to focus:

4.1 Right-Angled Triangle

4.2 Non-right Triangle

4.3 Bearings

4.4 Combinations

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