Which of the following is an identity? a. secx tanx - cosx cotx = sinx b. (tanx + cotx)(sinx cosx) = 1 c. sin2x = 4 - 2cos2x d. cosx(2sinx + 1) = 0

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is