Determine the length of a chord whose central angle is 75° in a circle with a radius of 12 inches.

Step-by-step explanation:

length=sqare root of(12^2+12^2-2*12*12*cos(75))=14.6

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)