Answer:
b = √( c² - a² )
Step-by-step explanation:
Equation to find the length of a right angle using pythagorean theoram is,
a ² + b² = c²
According to the question you have find the length of b side.
For that, you have to make b as the subject in this equation.
Let us solve now.
a ² + b² = c²
b² = c² - a²
b = √( c² - a² )
Therefore,
3rd Answer is correct.
Hope this helps you :-)
Let me know if you have any other questions :-)
