How would you find the fraction of a circle that an arc covers?
a. divide the measure of the arc by 180.
b. divide the circumference by 360.
c. divide the measure of the arc by 360.
d. divide the diameter by 360

Divide the measure of the arc by 360

Step-by-step explanation:

we can understand it with help of example.

Let there is a circle O in which An arc AC made a central angle 60°

Now the area in fraction = 60°/360°= 1/6

Because when we divide the circle in 6 parts then the area of each part = 1/6 of the area of the circle.

Therefore the central angle by this area is also 1/6 of the total central angle of the circle which is 360°

Thus, the angle made by this = 360°/6 = 60°

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.