Set, Relation and FunctionHard

Question

If t1 and t2 are the times of flight of two particles having the same initial velocity u and range R on the horizontal, then t12 + t22 is equal to

Options

A.
B.
C.
D.1

Solution

t1 = , t2 = where α + β = 90o
∴ t12 + t22 =  

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