함수 h(x)에 대하여 lim x->1 h(x)을 구하라

Step-by-step explanation:

Find lim x->1 h(x) for a function h(x).

I dont know the question I just know korean, here the translated version of the question. Hopes this helps to the people answering this question.

-18 degrees is the answer : )

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq