Question

Va rog urgent hjjdjsjsbsb​

Answer 1

2.

$\frac{10}{x} = \frac{y}{5} = > x \times y = 5 \times 10 = 50$

$3xy - 1 = 3 \times 50 - 1 = 150 - 1 = 149$

3.

$tg \: b = \frac{ac}{ab} = \frac{3}{4}$

Answer 2

$\it tgB=\dfrac{AC}{AB}=\dfrac{3}{4}=0,75$