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 = $frac{sqrt{3} *6}{3} = 2sqrt{3}$

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

#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 = $frac{KP}{KE} = frac{KE}{KM} = frac{EP}{EM}$