posted by Mark .
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.
College Algebra -
the minor axis is still 5.5
The major axis is 5.5/cos(arctan .25)
check my thinking.