5 The grade of a highway is its slope expressed as a percent (a 5% grade means the slope is 106). If the grade of a certain highway is 4% find (a) its angle of inclination and (b) the change in elevation (in ft) of a car driving for 4.00 mi uphill along this highway (1 mi = 5280 ft). (a) The angle of inclination is 2.29 . (Round to the nearest hundredth as needed.) (b) The change in elevation is 2 feet. (Type your answer using the appropriate number of significant digits.)Assume that o is an angle in standard position whose terminal side contains the point ( -5, - 5). Find the exact values of the following functions. 12 sin o = 2 (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression.) COS O (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression.)