Trigonometryhard · Past Paper
Express sin 3θ in terms of sin θ.
A3 sin θ - 4 sin³ θ
B4 sin³ θ - 3 sin θ
C3 sin³ θ - 4 sin θ
D3 sin θ + 4 sin³ θ
✓ Correct Answer: A — 3 sin θ - 4 sin³ θ
Standard triple angle formula for sine.
Share this question
More from Trigonometry
- In a triangle where θ = 30°, find the ratio of p/h.
- What is the value of tan(15)?
- A 1.2 m tall girl spots a balloon moving horizontally at a height of 88.2 m. The angle of elevation changes from 60° to 30°. Find the distance traveled by the balloon.
- Convert sin 2A in terms of tan A.
- Which formula represents cos 3A?