Question

a ball is thrown up at an angle of 30 degree with the harizontal if R and H represent in harizontal range and maximum height reaches then​

Answer 1

Maximum height, H = 2gu 2sin 2θ-----(i)

Horizontal range, R = gu 2 sin2θ

= g2u 2 ssinθcosθ------(ii)

Divide (i) by (ii), we get

RH

= 4tanθ

or tanθ=4H/R or θ=tan −1

(4H/R)