AB + AD = 47
Периметр треугольника АВС равен
The perimeter of triangle ABC is 47 would imply that the values for the sides AB, AD, and BC are known. Given that the perimeter is the sum of all three sides, you can find the missing side, BC, by subtracting the sum of AB and AD from 47. Once you have found the value of BC, you can use the Pythagorean theorem to solve for the missing angle, angle BAC. This theorem states that the square of the hypotenuse (BC) is equal to the sum of the squares of the other two sides (AB and AD). Use this information and the trigonometric functions to find the values of the remaining angles and sides of the triangle. It may also be helpful to draw a diagram to visualize the problem.
