Answer:
I'll give you a basic idea on how to do them
Pythagoras theorem
If you know two other sides of the right triangle, it's the easiest option; all you need to do is apply the Pythagorean theorem:
a² + b² = c²
If a is the missing side, then transform the equation to the form where a is on one side and take a square root:
a = √(c² - b²)
If b is unknown, then:
b = √(c² - a²)
If c is unknown, then:
c = √(a² + b²)
5.
a=5, b=7 and c=?
c=√(5^2 + 7^2)
c= √(25 + 49)
c= √74
Hope it helps:)