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Two projectiles are fired from ground with same initial speeds from same point at angles (45° + α ) and (45° – α ) with horizontal direction. The ratio of their times of flights is

1. α − α + 2 sin 1 2 sin 1
2. α − α + tan 1 tan 1
3. α + α − tan 1 tan 1
4. 1

Correct answer: α − α + tan 1 tan 1

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