The Pythagorean theorem, a^2+b^2=c^2, is used to calculate the side length of a right triangle. Which equation can be used to calculate the missing side length, b, of a right triangle?

Answer:
D b = sqrt(c^2 -a^2)
Step-by-step explanation:
We are using the Pythagorean theorem,
a^2+b^2=c^2
We want to solve for b
Subtract a^2 from each side
a^2 -a^2+b^2=c^2-a^2
b^2 = c^2 -a^2
Take the square root of each side
sqrt(b^2) = sqrt(c^2 -a^2)
b = sqrt(c^2 -a^2)
Answer:
answer A : b=√(c-a)
Step-by-step explanation:
a²+b²=c²
subtract a² from both sides to isolate b²
b²=c²-a²
take the square root of both sides to get from what b² equals to what b equals
b=√(c-a)