(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Prove that a projectile launched at angle @ has the same horizontal range as one launched with the same speed at angle (90 - @).

2. Relevant equations

Obviously kinematics will be used =/

3. The attempt at a solution

I've been messing around with kinematics but haven't gotten anywhere. I also know that sin(90-@) = cos(@) . Help appreciated :]

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# Homework Help: Proof - Projectile's Range

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