Respuesta :

MikeMart77

1. 90°.

2.

[tex] {x}^{2} + {4}^{2} = {7}^{2} \\ {x}^{2} = 49 - 16 \\ {x}^{2} = 33 \\ x = \sqrt{33} [/tex]

3. 90°

4. 7 units.

nhbn
1. Angle A=90 degree (because ABCD is a rectangle) => that means angle A is anh right angle.
2. Using Pythagorean theorem:
7^2 - 4^2 = x^2
49 - 16 = x^2
33 = x^2
x = √33
3. Angle B=90 degree (ABCD is a rectangle)
4. AC = 7 (in a rectangle, both the diagonals are equal)