A community group would like to raise funds to pay for improvements to the community swimming pool. The group's leaders are considering a number of methods to assess community interest in raising funds. Which of the
following uses convenience sampling?
The group sends a survey through the mail to all community residents.
The group places a survey on a webpage where residents can register their support.
O The group stands outside a shopping center and asks residents who enter if they support raising funds.
o The group selects a random sample of homes in the community, and residents in those homes are interviewed.

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?