If 2cot θ = 3, then $\frac{\sqrt{13}cosθ-3tanθ}{3tanθ+\sqrt{13}sinθ}$ is : |
$\frac{3}{4}$ $\frac{1}{4}$ $\frac{2}{3}$ $\frac{1}{5}$ |
$\frac{1}{4}$ |
Given :- 2cot θ = 3 cot θ = \(\frac{3 }{2}\) { we know cot θ = \(\frac{B}{P}\) } According to pythagoras theorem, P² + B² = H² 2² + 3² = H² H = √13 Now, $\frac{\sqrt{13}cosθ-3tanθ}{3tanθ+\sqrt{13}sinθ}$ = $\frac{\sqrt{13} × 3/√13 - 3× 2/3}{ 3× 2/3+\sqrt{13}× 2/√13 }$ = $\frac{1}{4 }$ |