From a point on the ground at a distance 'a' from the foot of a pole, a ball is thrown at an angle of 45 degrees, which just touches the top of the pole and strikes the ground at a distance of 'b', on the other side of it. Find the height of the pole.

Dear Student ,
Here is a link which will help you to solve this question with proper explanation .

https://www.meritnation.com/ask-answer/question/a-ball-is-projected-from-ground-at-an-angle-45-with-horizont/physics/9453301

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