Question

Помогите по братски ))

Answer 1

$ME= sqrt{13^2+11^2-2*13*11*cos100}= sqrt{290-286*cos100}\FN= sqrt{11^2+13^2-2*13*11*cos80}= sqrt{290-286*cos80}$

Answer 2

))

Answer 3

Сагол)

Answer 4

Сенде сагол).