Lemma
EasyCurves in space
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §12.2 Plane Motion: Projectiles and Cycloids, #6 · Multivariable Calculus · Curves in space

Find the angle … for a ball kicked at 30 meters/second if…

Find the angle for a ball kicked at 30 meters/second if it clears 6 meters traveling horizontally.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §12.2 Plane Motion: Projectiles and Cycloids, #6

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