Trigonometry
Special Right Triangles
Find the exact value of cot 30* - tan 0* + cos 60*.

½ + sqrt(3)

Step-by-step explanation:

tan(30) = 1/sqrt(3)

cot(30) = sqrt(3)

tan(0) = 0

cos(60) = 1/2

sqrt(3) - 0 + 1/2

sqrt(3) + ½

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

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