Prove that the locus of points from which there mutually perpendicular planes can be drawn to touch the ellipse is sphere x^2+y^2+z^2=a^2+b^2+c^2.

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

The longer leg of a 30-60-90 trangle is 18