Hello, hgphtgi!

I'll solve one part for you.

I want to know the lengths of

where

. .

We will determine

In right triangle , we have:Code:o D * | E * | o | d * | | 10.2 * | | * | | * 30^{O}- | - - | A o - - - - + - - o P : - x - Q 5.1 :

. .

Hence: .

In right triangle , we have:

. .

Therefore: .