The orbit of a planet around its star is an ellipse, with the star at one focus. the apoapsis of a planet is its greatest distance from the star, and the periapsis is its shortest distance. its mean distance is the length of the semi major axis. the mean distance from a planet to its star is 47 million miles. if the apoapsis of the planet is 51.5 million miles, what is the periapsis? what is the mean distance?

This is about circle theorems. someone asap : (

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

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 > ?