Braham Dev

Answer to: $ABCD$ is a rectangle with its vertices at $(2, -2), (8, 4), (4, 8)$ and $(- 2, 2)$ taken in order. Length of its diagonal is:

We are given a rectangle $ABCD$ with its vertices:

$ A(2, -2), B(8,4), C(4,8), D(-...

Answer to: In $\triangle ABC, \angle B= 90°$. if $\frac{AB}{AC} = \frac{1}{2}$, then $cos$ $C$ is equal to

In $\triangle ABC$, given that $\angle B = 90^\circ$, and

$ \displaystyle \frac{AB}{AC}...

Answer to: AB and CD are diameters of a circle with centre O and radius 7 cm. If $\angle BOD = 30^\circ$, then find the area and perimeter of the shaded region.

We are given a circle with center $O$ and radius $7$ cm. $AB$ and $CD$ are diameters, and $\angle BO...

Answer to: Find the nature of roots of the equation $3x^2 - 4\sqrt{3}x + 4 = 0$.

We are given the quadratic equation:

$ \displaystyle 3x^2 - 4\sqrt{3}x + 4 = 0 $
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Answer to: The volume of air in a hollow cylinder is $450 cm^3$. A cone of same height and radius as that of cylinder is kept inside it. The volume of empty space in the cylinder is

$V_{\text{cylinder}} = 450 \, \text{cm}^3$

$V_{\text{cone}} = \frac{1}{3} V_{\text{cylind...