The diagram shows a helicopter C hovering vertically above the point B on the horizontal ground AB. AC makes an angle of 30o with the gound AB. If AB = 200 m, how high is the helicopter above the ground?​

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events

Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o