In a unit circle, the radian measure of the central angle is equal to the length of the A. Intercepted arc
B. Radius
C. Diameter
D. Circumference

A. Intercepted arc.

Step-by-step explanation:

From Geometry we know that arc (), dimensionless, is measured by the following equation:

(1)

Where:

- Central angle, measured in radians.

- Radius, dimensionless.

If the circle has a radius of 1. Then, we notice that arc is directly proportional to the central angle. Hence, the right answer is A.

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.