MCQ
In a three dimensional space, the equation 3x - 4y = 0 represents:
- AA plane containing y axis
- BNone of these
- CA plane containing z axis
- DA plane containing x axis
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If $\sin\theta=\frac{-4}{5}$ and $\theta$ lies in third quadrant then the value of $\cos\frac{\theta}{2}$ is:
$\frac{1}{5}$
$-\frac{1}{\sqrt{10}}$
$-\frac{1}{\sqrt{5}}$
$\frac{1}{\sqrt{10}}$