A particle is projected with speed u at an angle \theta(

JEE Advanced 2020 Concept Recapitulation Test 2 Paper 1

Question : 15 of 54

Marks: +1, -0

A particle is projected with speed u at an angle θ(<60∘) with the horizontal. If the time taken by it, so that its velocity makes an angle 60∘ with the initial velocity is
n‌

‌

sin(θ+30∘)

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