Cho hình chóp S. ABCD có đáy là hình vuông cạnh a, đường thẳng SA vuông góc với đáy, đường thẳng SB tạo với mặt đáy góc . Khi đó thể tích khối chóp S. ABCD là

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

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 > ?