Question

me ajudem por favor!!!!!

Answer 1

4 - a)

X² = 6² + 8²

X² = 36 + 64

X² = 100

X = ± $\sqrt{100}$

X = 10

Sen B = $\frac{6}{10}$ = $\frac{3}{5}$

Cos B = $\frac{8}{10}$ = $\frac{4}{5}$

Tan B = $\frac{6}{8}$ = $\frac{3}{4}$

b)

13² = X² + 12²

169 = X² + 144

X² = 169 - 144

X = ± $\sqrt{25}$

X = 5

Sen E = $\frac{12}{13}$

Cos E = $\frac{5}{13}$

Tan E = $\frac{12}{5}$

c)

8² = X² + 1²

64 = X² + 1

X² = 64 - 1

X = ± $\sqrt{63}$

X = $\sqrt{9 . 7}$

X = 3 $\sqrt{7}$

Sen U = $\frac{1}{8}$

Cos U = $\frac{3\sqrt{7} }{8}$

Tan U = $\frac{\sqrt{7} }{21}$