1.

For angles of projection of a projectile at angles `(45^(@)` – θ) and `(45^(@) + θ)`, the horizontal ranges described by the projectile are in the ratio of:A. ` 1 : 1 `B. `2 : 3 `C. ` 1 : 2 `D. `2 : 1 `

Answer» Correct Answer - A
For complementary angles, rnage will be same
OR
`(R^(1))/(R^2)=[[(u^(2)sin 2(45-0))/(g)]/[[u^(2) sin2(45+0))/(g)]]=(u^(2)sin(90-20))/(u^(2)sin(90+20))`


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