Question

The range of a projectile when launched at angle 20 is R. When launched at angle 30, the range is still R. Then value of 8 should be (speed of projection in both case is same)​

Answer 1

Answer:

Correct option is B)

If two bodies thrown at same speed at angles such that their sum =π/2 then both of them will have the same range. (Because due to this value of sin(2θ) will not change. )

so the other angle has to be 90−30=60

o