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Subjects / LC Mathematics / Geometry and Trigonometry

Trigonometric identities and compound angles

Use and prove identities such as sin²A + cos²A = 1, compound angle and double angle formulae.

5th Year6th Year Higher
15practice questions

Multiple choice: 7 · Select all that apply: 2 · Numeric answer: 4 · Put in order: 1 · Written answer (self/teacher assessed): 1

Each question has up to three hints, a worked explanation, and is tracked in your progress and review plan.

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Multiple choicePaper 2 – Geometry and Trigonometry
A is an acute angle with sin A = 3/5. What is tan A?
Choose one answer
Hint 1

Use sin²A + cos²A = 1 to find cos A.

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