Trigonometric Identities – Double Angle, Half Angle, Product-to-Sum
Maths Higher · Grade 11 · Week 9 · 25 questions
Trigonometric Identities is a central Grade 11 mathematics chapter covering Double Angle, Half Angle, and Product-to-Sum. These methods reappear throughout Grade 12 and in board + competitive exam papers.
What you'll practise
- Prove Double Angle
- Solve Half Angle
- Evaluate Product-to-Sum
- Apply trigonometric identities concepts to NCERT exercise and exemplar problems
All 25 questions in this Trigonometric Identities – Double Angle, Half Angle, Product-to-Sum quiz
Grade 11 Maths Higher — Trigonometric Identities – Double Angle, Half Angle, Product-to-Sum: 25 practice questions with instant scoring and explanations.
- Using the standard identity, the value of sin 2A is:
- Using the standard identity, the value of cos 2A is:
- Using the standard identity, the value of tan 2A is:
- Using the standard identity, the value of sin(A/2) is:
- Using the standard identity, the value of cos(A/2) is:
- Using the standard identity, the value of tan(A/2) is:
- sin A · sin B =
- cos A · cos B =
- sin A · cos B =
- Using the standard identity, the value of sin 120° is:
- If sin θ = 3/5 and θ is acute, then sin 2θ =
- Using the standard identity, the value of cos 120° is:
- If tan θ = 1/2, then tan 2θ =
- Using the standard identity, the value of sin 22.5° is:
- The identity 1 + cos 2A =
- The identity 1 - cos 2A =
- sin 2A/(1 + cos 2A) =
- If cos A = 3/5 (A in first quadrant), then cos 2A =
- Using the standard identity, the value of tan 15° is:
- cos A + cos B =
- sin A - sin B =
- sin²A - sin²B =
- If A = 30°, then sin 2A - cos 2A =
- tan(A/2) in terms of sin A and cos A is:
- sin 3A = 3 sin A - 4 sin³A is equivalent to:
Question 1 of 250 correct so far