2cosx+3tanx=0
2cosx+3sinx/cosx=0 *cosx
2cos^2x+sinx=0 ***Im stuck here any hints, I tried to use the double angel formula but its cos 2x not 2cosx! any hints!
2cosx+3tanx=0
2cosx+3sinx/cosx=0 *cosx
2cos^2x+sinx=0 ***Im stuck here any hints, I tried to use the double angel formula but its cos 2x not 2cosx! any hints!