1) Convert given radian measure to degree measure, 2.438 radians.
2) Determine length of hypotenuse if angle A is 71.85 degrees and side opposite A is 8.9441 in length.
3) Determine value of trigonometric function, tan 55.3'
4) Determine trignometry values for sin, cos and tan of trigonometric function of angle. (in standard position) who terminal side passes through point (8,15)