Which expression is equivalent to cos(pi/12)cos(5pi/12)+sin(pi/12)sin (5pi/12)? a. cos(-pi/3)
b. sin(-pi/3)
c. cos(pi/2)
d. sin(pi/2)

Which statement is not always true for a parallelogram? (a) opposite sides are congruent. (b) diagonals bisect each other. (c) it has 4 congruent angles. (d) consecutive angles are supplementary.

Empty box + box + empty box fill in the box is equal to 30 how

Given the points a(-2, 1) and b(8, 6), find the coordinates of the point c on directed line segment ab, that partitions ab in the ration 2: 3.