Нужна помощь!!!!!!!!!!!!!!!!!!!!!!!!!!! 6cosX+5sinX=0

Question

Нужна помощь!!!!!!!!!!!!!!!!!!!!!!!!!!!

6cosX+5sinX=0

Answer 1

6cosx+5sinx=0 |:cosx≠0
6+5tgx=0
tgx=-6/5
x=-arctg(6/5)+πn, n∈Z