Question

dau coroana ajutati-ma plizzz

Answer 1

Într-un triunghi echilateral toate cele 3 unghiuri sunt egale,fiecare având 60°.

$a)a+10^{\circ} =60 ^{\circ}$

$a = 60^{\circ} - 10^{\circ}$

$a = 50^{\circ}$

$\frac{b}{2} + 35^{\circ} = 60^{\circ} \: | \times 2$

$b + 70^{\circ} = 120^{\circ}$

$b = 120^{\circ} - 70^{\circ}$

$b = 50^{\circ}$

$2c - 40^{\circ} = 60^{\circ}$

$2c = 60^{\circ} + 40^{\circ}$

$2c = 100^{\circ}$

$c = \frac{100^{\circ}}{2}$

$c = 50^{\circ}$

$b)2a + 20^{\circ} = 60^{\circ}$

$2a = 60^{\circ} - 20^{\circ}$

$2a = 40^{\circ}$

$a = \frac{40^{\circ}}{2}$

$a = 20^{\circ}$

$2b - 20^{\circ} = 60^{\circ}$

$2b = 60^{\circ} + 20^{\circ}$

$2b = 80^{\circ}$

$b = \frac{80^{\circ}}{2}$

$b = 40^{\circ}$

$2c = 60^{\circ}$

$c = \frac{60^{\circ}}{2}$

$c = 30^{\circ}$