Question

Решить задачи: №2, 3, 5

Answer 1

Ответ:

2.

$\sin(45^{\circ}) = \frac{EF}{TF} \\ TF= \frac{EF}{ \sin(45^{\circ}) } = 16 \sqrt{2}$

3.

$tg(30^{\circ}) = \frac{KN}{NL} \\ NL = \frac{KN}{tg(30^{\circ})} = KN \times ctg(30^{\circ}) = \\ = 4 \times \sqrt{3} = 4 \sqrt{3}$

5.

$\sin(30^{\circ}) = \frac{MF}{EF} \\ MF = \sin(30^{\circ}) EF = \frac{1}{2} \times 10 = 5$