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Q.

A body is projected at such angle that the horizontal range is three times the greatest height. The angle of projection is :

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a

tan−1⁡34

b

60∘

c

tan−1⁡43

d

45∘

answer is C.

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Detailed Solution

R=3Hmax⇒2u2sin⁡θcos⁡θg=3u2sin2⁡θ2g ⇒tan⁡θ=43
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