ation6 = a tan a — AJi cos a ox h = a tan ^ — tt (1 + tan a), from which to determine a. This equation is a quadratic in tan «:—^when the two rootsare real and unequal, there are two directions of projectionwhich will satisfy the problem ;—^when the two roots are realand equal, these two directions… … 228 OP THE MOTION OP PROJECTILES. This problem admits of a simple geometrical constniction.From the point of projection Adraw J.5^Tertical and = h, throtighH draw SL horizontal, then MLwill be the directrix of the para-bolic path Art. (85), Cor. Theproblem then resolves itself intothis^-to…
Mechanics
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