Question

A homework question says that the angle of depression from the bottom of a house window to a ball on the ground is 20 degrees below is your friends sketch of the situation describe your fruends error

Answer 1

Answer: He marked angle of depression in the wrong side.

Explanation:

Angle of depression : If someone stands and looks down at an object, the angle of depression is the angle between the horizontal line of his sight and the object.

If point O shows the bottom of a house window, A shows the position of ball and OX is the horizonal line.

Then, By the definition of angle of depression,

Angle XOA is the angle of depression from the bottom of a house window to a ball on the ground.

That is,
`\angle XOA = 20^(\circ)`