Question

The angle of projection at which the horizontal range and maximum height of projectile are equal is

• A. ${45}^{\circ }$
• B. $\theta =ta{n}^{-1}\left(0.25\right)$
• C. $\theta =ta{n}^{-1}4or(\theta ={76}^{\circ })$
• D. ${60}^{\circ }$

Answer 1

The correct option is C

$\theta =ta{n}^{-1}4or(\theta ={76}^{\circ })$

R = 4H cot $\theta$
When R = H then $cot\theta =\frac{1}{4}\Rightarrow \theta =ta{n}^{-1}\left(4\right)$