If R = Rmax / 2, then angle of projection is:
Correct answer: C. 15°
- A. 30°
- B. 60°
- C. 15°
- D. 45°
Explanation
Range R ∝ sin(2θ). Setting sin(2θ) = 1/2 (half of maximum where sin(2θ)=1) gives 2θ = 30° ⇒ θ = 15°.
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