Question

срочно нужно!!!.............

Answer 1

Одз
-5cosx≥0
cosx≤0
п/2+2пn≤x≤-п/2+2пn

√3tg²x-tgx=0
tgx(√3tgx-1)=0
tgx=0
x=пn,n€z
tgx=1/√3
x=п/6+пn,n€z