Represent each situation using a proportion. Use your proportion to write an equation and solve. Check your answer. a. What number is 40% of 90? b. What number is 45% of 90? c. 27 is 30% of what number? d. 18 is 30% of what number? e. 25.5 is what percent of 85? f. 21 is what percent of 60?

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

853.3

step-by-step explanation: