$\cot {70^o} + 4\cos {70^o} = . . .$
$\cot {70^o} + 4\cos {70^o} = . . .$
- A
$\frac{1}{{\sqrt 3 }}$
- B
$\sqrt 3 $
- C
$2\sqrt 3 $
- D
$\frac{1}{2}$
Similar Questions
$cos\, \frac{\pi }{{10}} \,cos\, \frac{2\pi }{{10}} \,cos\,\frac{4\pi }{{10}}\, cos\,\frac{8\pi }{{10}}\, cos\,\frac{16\pi }{{10}}$ =
$cos\, \frac{\pi }{{10}} \,cos\, \frac{2\pi }{{10}} \,cos\,\frac{4\pi }{{10}}\, cos\,\frac{8\pi }{{10}}\, cos\,\frac{16\pi }{{10}}$ =
જો $x\cos \theta = y\cos \,\left( {\theta + \frac{{2\pi }}{3}} \right) = z\cos \,\left( {\theta + \frac{{4\pi }}{3}} \right),$ તો $\frac{1}{x} + \frac{1}{y} + \frac{1}{z}$ ની કિમંત મેળવો.
જો $x\cos \theta = y\cos \,\left( {\theta + \frac{{2\pi }}{3}} \right) = z\cos \,\left( {\theta + \frac{{4\pi }}{3}} \right),$ તો $\frac{1}{x} + \frac{1}{y} + \frac{1}{z}$ ની કિમંત મેળવો.
- [IIT 1984]
$\frac{{\cos A}}{{1 - \sin A}} = $
$\frac{{\cos A}}{{1 - \sin A}} = $
$\cos \left(\frac{2 \pi}{7}\right)+\cos \left(\frac{4 \pi}{7}\right)+\cos \left(\frac{6 \pi}{7}\right)$ ની કિંમત $\dots\dots$છે.
$\cos \left(\frac{2 \pi}{7}\right)+\cos \left(\frac{4 \pi}{7}\right)+\cos \left(\frac{6 \pi}{7}\right)$ ની કિંમત $\dots\dots$છે.
- [JEE MAIN 2022]
જો $a\tan \theta = b$, તો $a\cos 2\theta + b\sin 2\theta = $
જો $a\tan \theta = b$, તો $a\cos 2\theta + b\sin 2\theta = $