The formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of which function(s)?
O tangent only
O cosine only
O sine and tangent
O cosine and sine

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel