Find exact solotions.

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!

Printable View

- Apr 20th 2009, 02:28 PMjepalSolving Trigonometric Equation
Find exact solotions.

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! - Apr 20th 2009, 02:39 PMskeeter