Answer:
75%
Step-by-step explanation:
20-5=15 - change in numbers
15/20×100%= 75%
Answer:

Step-by-step explanation:
we know that
The formula of law of cosines is equal to

where
a, b and c are sides. C is the angle opposite side c
In this problem we have

substitute the given values






Step-by-step explanation:
check it.. i have solved it for you.
Answer:
108cm
Step-by-step explanation: