Answer: 
Step-by-step explanation:
Given
Andy wants to turn
on his skateboard
Currently, he can make a turn of 
The difference between the required and current turn degree meets his goal i.e.

Thus, he needs to turn by
to meet his goal
Answer:
For the first one the answer is:
<K = 31°
Sorry I don't know the second one.
Answer:
10inchs
Step-by-step explanation:
sana makatulong