College Algebra
posted by Mark on .
A circular vent pipe with a diameter of 5.5 inches is place on a roof that has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.

the minor axis is still 5.5
The major axis is 5.5/cos(arctan .25)
check my thinking.