Question 2 2.1 Find 2.2 dz -, at the point (1,2), if z = sin- * dy y If z = cos -1 2.2.1 z dy 2.2.2 d'z dy 1 determine (2) 2.3 A projectile is fired from a position on the ground. The motion of the projectile in two dimensions is represented by the parametric equations x = 0e and y = (1+0) : dy 2.3.1 Find an expression for the velocity of the projectile. dx 2.3.2 Find an expression for the acceleration d y dx (2) of the projectile. (4) (3)