What trigonometry topics are tested in O Level E Math?

O Level E Math tests sin/cos/tan in right-angled triangles, bearings, angles of elevation and depression, and 3D problems using Pythagoras plus a trig ratio. Know SOHCAHTOA and when to use each ratio.

How do I solve bearing questions?

Draw a north line at the starting point, measure the bearing clockwise from north, and label the angle inside the triangle. Use sin, cos, or tan based on which sides you know.

What are common O Level trigonometry mistakes?

Using the wrong ratio (sin vs cos), calculator in radians instead of degrees, and rounding too early. Always sketch the triangle and label opposite, adjacent, and hypotenuse before choosing a ratio.

O Level · Elementary Mathematics

35+ O Level E Math Trigonometry Practice Questions for 2026 (based on Singapore MOE Syllabus)

O Level E Math trigonometry covers sine, cosine, tangent ratios, bearings, and 3D trig problems. This page has 35+ exam-style questions with step-by-step solutions for the Singapore MOE syllabus (2026).

35 free sample questions below — answers and step-by-step solutions included.

Free on Tutorly.sg

Want more Trigonometry questions — with step-by-step help?

These 35 questions are a sample. On Tutorly.sg/app you can practise unlimited O Level Elementary Mathematics questions, get instant explanations after you try, and use past-year papers — no sign-up needed to start.

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✓ Singapore syllabus: O Level

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Frequently asked questions

What trigonometry topics are tested in O Level E Math?: O Level E Math tests sin/cos/tan in right-angled triangles, bearings, angles of elevation and depression, and 3D problems using Pythagoras plus a trig ratio. Know SOHCAHTOA and when to use each ratio.
How do I solve bearing questions?: Draw a north line at the starting point, measure the bearing clockwise from north, and label the angle inside the triangle. Use sin, cos, or tan based on which sides you know.
What are common O Level trigonometry mistakes?: Using the wrong ratio (sin vs cos), calculator in radians instead of degrees, and rounding too early. Always sketch the triangle and label opposite, adjacent, and hypotenuse before choosing a ratio.