What is the measure in radians for the central angle of a circle whose radius is 9 cm and intercepted arc length is 7.2 cm

0.8 radians

Step-by-step explanation:

To solve this exercise you must apply the formula shown below:

Where S is the arc lenght, r is the radius of the circle and is the central angle in radians.

Solve for the central angle:

Now, when you susbtitute the value of the arc length and the radius, you obtain that the central angle is:

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50