igle of radian The tick marks on the circle are spaced at every two tenths radian Use the figure to find a positive angle whose sine is 0 55 Find one positive angle whose sine is 0 55 One angle is 0 6 Type your answer in radians Type an integer or a decimal rounded to one decimal place as needed Try again Recall that for any real number s represented by a directed arc on the unit circle sin s y X 2 1 0 8 0 6 0 4 0 2 10 8 radian 5 0 6 radian radian 01204016 08 0 4 radian 0 2 radian X 6