Answer: 86.6 hopes this helps:)
Step-by-step explanation:
<u>Answer-</u>
<em>At 15.91° the ball was thrown.</em>
<u>Solution-</u>
<em>In the question it is given that the ball was released and caught from the same height.</em>
We know that,

Where,
R = Range of the projectile = 7.75 m,
u = Initial speed = 12 m/s
θ = Angle at which it was released
g = Acceleration due to gravity = 9.8 m/s²
Putting all the values,





I think it would help more if you looked it up on Google hope this helped
Lets solve:
- - Solve for that to get answer:
24.3
Your final answer is 24.3
Double of 50 is 100, so 28*100=2800, now half of the answer is 2800/2=1400