Question

giải pt sin3x / cos3x -1 =0

Answer 1

What we are to do here ??

Finding the solution for x??

Answer 2

What does that pt stand for ????

Answer 3

That is \[\frac{\sin(3x)}{\cos(3x)}-1=0\] , right?

Answer 4

Yes I think..

Answer 5

I would add 1 to both sides and recall that sin(u)/cos(u)=tan(u)
Where u=???
I will let you reply back before I add anything else @nhỏ