Question #38191

Two particles projected from the same point with equal speeds at an angle α &β strikes the horizontal ground at the same point. If H1 & H2 be maximum height be the range for both, T1 & T2 is the time of flight. Then
1. α +β=½
2. R=4H1H2
3. T1/T2=tanα
4. Tanα=h1/h2

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