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Zolol [24]
2 years ago
13

The formula for the hypotenuse of a right triangle with legs of length a and b is shown.

Mathematics
2 answers:
fomenos2 years ago
6 0

Answer: b=\sqrt{c^{2}-a^{2}}

Step-by-step explanation:

To solve the exercise you must solve for b from the formula for the hypotenuse, as you can see below:

- Square both sides of the equation as following:

c^{2}=(\sqrt{a^{2}+b^{2}})^{2}

- Now you must subtract a² from each side of the equation, then you obtain:

c^2-a^{2}=a^{2}-a^{2}+b^{2}

c^2-a^{2}=b^{2}

- Apply square root to both sides:

\sqrt{b^{2}}=\sqrt{c^{2}-a^{2}}

Then:

b=\sqrt{c^{2}-a^{2}}

vfiekz [6]2 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Given

c = \sqrt{a^2+b^2}

Square both sides

c² = a² + b² ( subtract a² from both sides )

c² - a² = b² ( take the square root of both sides )

\sqrt{c^2-a^2} = b

⇒ b = \sqrt{c^2-a^2}

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