Question

Calcule o valor de x nos triângulos retângulos

Answer 1

a) x² = 8²+6²

x² = 64 + 36

x = √100  →  x = 10

b) x² = 9² + 12²

x² = 81 + 144

x = √225  → x = 15

c) 5² = x² + 4²

25 - 16 = x²

x = √9  → x = 3

d) 20² = (3x)² + ( 4x )²

400 = 9x² + 16x²

25x² = 400

x² = 400/25

x = √16  →  x = 4