Find the length of A

ill give brainliest.

a = 5

Step-by-step explanation:

Topic: Pythagorean Theorem

In this problem, we need to solve for a missing side in a right triangle using the Pythagorean theorem.

Formula:

Parts:

Step 1: Plug in information

We want to use the info we have and plug in the values for the variables

"a" is unknown, so we can leave it like that

"b" is the second-longest and it is a leg. In this case, it is 12

"c" is the hypotenuse and the longest side. This has a value of 13

We can use this to rewrite the equation

a² + 12² = 13²

Step 2: Solve for a

We want all terms with "a" on one side, and we want "a" alone, no exponents, nothing.

a² + 12² = 13²

a² = 13² - 12²

a = √(13² - 12²)

Step 3: Solve for a

The rest is the same, just solving the equations. Remember, square rooting and squaring are not distributive to adding and subtracting. This means that √(13² - 12²) is not 13 - 12.

a = √(13² - 12²)

a = √(169 - 144)

a = √(25)

a = 5

-Chetan K

b

step-by-step explanation: