Two sides of a triangle have lengths 6 and 17. which expression describes the length of the third side?
a.at least 11 and at most 23
b.at least 11 and less than 23
c.greater than 11 and at most 23
d.greater than 11 and less than 23

We need to find the angle theta for which csc (theta) is undefined.

csc is the reciprocal of sine trigonometric function.

Therefore, csc (theta) = 1/ sin (theta).

We know sin(0)° = 0.

Let us check the value of csc (theta) by taking theta =0.

csc(0)° = 1/ sin (0)°.

Plugging value of sin(0)° = 0.

csc(0)° = 1/0.

1/0 is undefined value.