The top and the bottom end of a wiper blade are 12" and 34" respectively from the pivot point on the windshield. If the wiper sweeps an angle of 140°, what is the difference in arc length swept out
by the two ends?

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.

4+3x is the answer

hope you got it