Question

Please help asap and explain how. Tysm!!♡

Answer 1

a = 7.9 or a = √63

Explanation:

a² + b² = c²

(The two shorter sides of a triangle are always a and b while the longer side will always be c)

So, here the longer side of this triangle is 12 and the shorter sides are 9 and a (unknown).

The equation is: a² + 9² = 12²

But to find the value of a, the formula will be 12² - 9² = a²

12² - 9² = a²

144 - 81 = a²

63 = a²

the square root of 63 = 7.9 so that means a = 7.9

Answer 2

Explanation:

a =
`√(12^2 -9^2) = √(144-81) = √(63)`

We use the minus because we are searching a leg.

A leg is always shorter than the hypotenuse