Application Problems a) Sketch the triangle GAB determined by the origin (pole) and the points whose polar coordinates are Ami 10) and 3(a,145). b) Deten'nine the length of side AB using the Law of Cosines. C] Use Heron's formula to nd the area of the triangle DAB. d) Check the result of part c) above geometrically by rotating the triangle so that side 0A coincides with the positive x-axis and using the formula of a right triangle: Area = %(buse)(height)