Express the following angles in radian measure as multiples of n and as decimals accurate to three decimal places: 5) 30 6) 150 9) -20 10) -240 7) 315 8) 120 11) -270 12) 144 Express the following angles in degree measure: 3 7 -7 16) -2.367 13) 14) 15) 2 6 12 7 -11 11 20) 0.438 17) 18) 19) 3 30 6