Question

помогите решить задачи !поставлю 5 звёзд!!!!!​

Answer 1

Ответ:

#1.

sinβ = $\frac{5}{\sqrt{29} }$

cosβ = $\frac{2}{\sqrt{29} }$

tgβ = $\frac{5}{2}$

#2.

tg30° = $\frac{\sqrt{3} }{3}$ ⇒ x = $\frac{\sqrt{3} *6}{3} = 2\sqrt{3}$

$y = 2*x = 4\sqrt{3}$

#3.

sin45° = $\frac{\sqrt{2} }{2}$; tg45° = 1

$\frac{2}{4} - 1 = - \frac{1}2} = -0,5$

#4.

(1 - sinα)(1 + sinα) = 1 - sin²α = cos²α

#5.

cosα = $\frac{KP}{KE} = \frac{KE}{KM} = \frac{EP}{EM}$