MCQ
The range of a projectile when launched at angle $\theta$ is same as when launched at angle $2 \theta$. What is the value of $\theta$ ?
- A$15$
- ✓$30$
- C$45$
- D$60$
✓
Answer
Correct option: B.
$30$
b
(b)
(b)
$2 \theta=90^{\circ}-\theta$
or $3 \theta=90^{\circ} \text { or } \theta=30^{\circ}$
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