R.K. Singh Solutions for Chapter: SSC Advanced Maths. : Previous Years Solved Papers, Exercise 8: SSC LDC Exam. : 21.10.2012

Three medians $\overline{\mathrm{AD}}, \overline{\mathrm{BE}}$ and $\overline{\mathrm{CF}}$ of a triangle $\mathrm{ABC}$ cut one another at $\mathrm{G}.$ If area of $∆\mathrm{ABC}$ is $36{ \mathrm{cm}}^2$ then the area of $\mathrm{BDGF}$ will be

The angle of elevation of a cloud from a point $\mathrm{h}$ metres above a lake is $30°$ and the angle of depression of the reflection of the cloud in lake is $60°.$ What is the height of cloud from lake?

In $∆\mathrm{ABC}, \mathrm{B}$ is right angle. $\mathrm{AB}=15 \mathrm{cm}$ and $\mathrm{BC}=20 \mathrm{cm}$ then what will be its circumradius?

If $\sin \left(\mathrm{x}+\mathrm{y}\right)=\frac{\sqrt{3}}{2}$ and $\tan \left(\mathrm{x}-\mathrm{y}\right)=\frac{1}{\sqrt{3}}$ then the value of $\mathrm{x}$ will be

If $\mathrm{A}+\mathrm{B}=90°$ then ${\sec }^2\mathrm{A}+{\sec }^2\mathrm{B}-{\sec }^2{\mathrm{Asec}}^2\mathrm{B}=?$

If ${\tan }^4\mathrm{\theta }+{\tan }^2\mathrm{\theta }=1$, then the value of ${\cos }^4\mathrm{\theta }+{\cos }^2\mathrm{\theta }$ will be

In $∆\mathrm{ABC}, \overline{\mathrm{AD}}$ is a median. Then which of the following relations is true?

If $∆\mathrm{ABC}$ and $∆\mathrm{DEF}$ are similar and $2\mathrm{AB}=\mathrm{DE}, \mathrm{BC}=8 \mathrm{cm}$, then $\mathrm{EF}$ will ue