What angle should you throw a football for maximum range?

Most people know that a ball without air resistance (traditional projectile motion) goes the farthest if you throw it at a 45 degree angle. What if there is air resistance? Why is 45 the best angle without air resistance?
Why is 45 degrees the angle for maximum range in projectile motion?

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What angle should you throw a football for maximum range?

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What is the best angle to throw a ball if you want to achieve the

What is the maximum size of a rock that a human can throw? - Quora

What is the best angle to throw a ball if you want to achieve the