A projectile is projected at 
by making at an angle 
to the horizontal. After some time its velocity makes an angle of 
to the horizontal. Its speed at this instant (in 
) is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
:
Let 
be the velocity of the projectile at 
when it makes an angle 
with the horizontal.
Then
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