18 how much deeper is the deepest canyon on Mars than the deepest canyon on Venus. 19. What is the difference between Earth's highest mountain and its deepest ocean Canyon? What is the difference between Mars has highest mountain and its deepest canyon? Which difference is greater? How much greater is it
Use the table for both problems

all it means is function 3

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4