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Q.

A projectile is thrown at an angle 370 from the vertical. The angle of elevation of the highest point of the projectile from point of projection is

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a

tan1(3/2)

b

tan1(3/8)

c

tan1(2/3)

d

tan1(8/3)

answer is B.

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Detailed Solution

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900θ=370

θ=530

tanα=HmaxR/2=2HR

=2u2sin2θ/2gu2sin2θ/g=tanθ2

=tan5302=4/32

tanα=23

α=tan1(2/3)

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