The speed of a projectile at its maximum height is half of its intial speed. The angle of projection is ......... $^o$
The speed of a projectile at its maximum height is half of its intial speed. The angle of projection is ......... $^o$
- [AIPMT 2010]
- A
$60$
- B
$15$
- C
$30$
- D
$45$
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