Question

Find side BC in the given triangle

Answer 1

Answer: BC = 8.94

Explanation:

Since this is a right triangle, we can use the Pythagorean theorem. a and b are the triangle legs and c is the hypotenuse.

a² + b² = c²

19² + b² = 21²

361 + b² = 441

b² = 80

b =
`√(80)`

b ≈ 8.94

BC = 8.94