Question

if the horizontal range of a projectile is twice of the maximum height attained find the angle of projection...
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Answer 1

Answer:

Range = u^2 x sin2Θ/g

Height maximum = u^2 x sin^2Θ/2g

According to question

Range = 2 x height

u^2 x sin2Θ/g = 2 x u^2 x sin^2Θ/2g

=sin2Θ = sin^2Θ

= 2sinΘcosΘ = sin^2Θ

= tanΘ = 2

= Θ =tan^-1(2)

Answer= Θ =tan^-1(2)

hope it helped

Step-by-step explanation:

Answer 2

Answer:

Iron rods a,b,c,d,e and f are making a design in a bridge as shown in the figure if a||b , c||d , e||f, find the marked angles between

¡ b and c

¡¡ d and e

¡¡¡ d and f

¡v c and f