DeltaForce
Gold Member
 25
 2
 Homework Statement
 Show that the range of the projectile is the same for two different projection angles  a pair that add up to 90 degrees.
 Homework Equations

theta1 +theta2 = 90
v^2 * sin(2theta1)/g = v^2 *sin(2theta2)/g
theta1 = 90 theta2
I substituted that into v^2*sin(2theta1)/g
So I get
v^2*sin(1802theta2)/g
Now I'm stuck. What do I do next?
I substituted that into v^2*sin(2theta1)/g
So I get
v^2*sin(1802theta2)/g
Now I'm stuck. What do I do next?