If one of the diameters of the circle, given by the equation \(x^2+y^2-4 x+6 y-12=0\), is a chord of a circle, ' S ', whose centre is at \((-3,2)\), then the length of radius of ' S ' is _______ units.
The eccentric angle of the point \(\mathrm{P}(-6,2)\) of the ellipse \(\frac{x^2}{48}+\frac{y^2}{16}=1\) is
Two cards are drawn successively with replacement from fair playing 52 cards. let X denote number of kings obtained when two cards are drawn, then \(\mathrm{E}\left(\mathrm{X}^2\right)=\)
The distance of the point \((5,3,-1)\) from the plane passing through points \((2,1,0),(3,-2,4)\) and \((1,-3,3)\) is
The equation of plane passing through \((1,0,0)\) and \((0,1,0)\) and making an angle \(45^{\circ}\) with the plane \(x+y-3=0\) is
The approximate value of \(\frac{1}{(2.002)^2}\) is
Three numbers are chosen at random from numbers 1 to 20 . The probability that they are consecutive is
If \( y = y(x) \) and \[ \left( \frac{2+\sin x}{y+1} \right)\frac{dy}{dx} = -\cos x, \] with the initial condition \( y(0) = 1 \), then find \[ y\left(\frac{\pi}{2}\right) = \, ? \]
The number of integral values of $p$ for which the vectors $(p + 1)\hat{i} - 3\hat{j} + p\hat{k},\; p\hat{i} + (p + 1)\hat{j} - 3\hat{k}$ and $-3\hat{i} + p\hat{j} + (p + 1)\hat{k}$ are linearly dependent, is ______.
If \( f(x) = \frac{k \sin x + 2 \cos x}{\sin x + \cos x} \) is strictly increasing for all real values of \( x \), then: