Which function's graph is shown below?
A. y = -sin x
B. y = sin x
C. y = cos x
D. y=-cos x

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false