Question

7. For elevations which exceed or fall short of thita by equal
amounts, the ranges are equal hence thita equals
(a) 30°
(b) 45°
(c) 60°
(d) there is no such angle.​

Answer 1

Answer:

HOPE IT HELPS......

Explanation:

We know that, R=gu2sin2θ

θ1=450+α, θ2=450−α

R1=gu2sin2θ1

R1=gu2sin2(450+α)

R1=gu2sin(900+2α)=gu2cos2α. . . . . . .(1)

R2=gu2sin2θ2

R2=gu2sin2(45−α)

R2=gu2sin(90−2α)=