Question

Знайдіть сторону ВС трикутника АВС (А=90),якщо АВ=3 см,АС=4 см

Answer 1

Если А=90
BC в квадрате=AB в квадрате+ AC в квадрате=9+16=25
BC=5

Answer 2

Finding the Side AC of Triangle ABC (with A = 90°)

To find the length of side AC of triangle ABC, we can use the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

In this case, we are given that side AB has a length of 3 cm and side AC has a length of 4 cm. We need to find the length of side BC.

Using the Pythagorean theorem, we have:

BC^2 = AB^2 + AC^2

Substituting the given values, we get:

BC^2 = 3^2 + 4^2 BC^2 = 9 + 16 BC^2 = 25

Taking the square root of both sides, we find:

BC = 5 cm

Therefore, the length of side BC is 5 cm.

Answer:

The length of side BC of triangle ABC, given that AB = 3 cm and AC = 4 cm, is 5 cm.