Two projectiles are fired from ground with same initial speeds from same point at angles (45 + ) and (45 - ) with horizontal direction. The ratio of their times of flights is
(1) 1 + 1 -
Time of flight: T = 2u g
⇒ T1T2 = (45 + ) (45 - )
= 45 + 45 45 - 45
= + -
Dividing numerator and denominator by :
T1T2 = 1 + 1 -
Answer: (1)
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