Which expression is equivalent to sin^2 x-sin x - 2/sin x -2 a. sin x + 1 b. sin x − 1 c. sin2x d. -sin2x

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1

55/i dont know i do it for the points

step-by-step explanation: