e point P 1 0 lies on the curve y sin 147 If Q is the point x sin 4 f find the slope of the secant line PQ correct to four decimal places for the following valu 1 2 ii 1 5 iii 1 4 iv 1 3 v 1 2 vi 1 1 vii 0 5 viii 0 6 ix 0 7 x 0 8 xi 0 9