Embibe Experts Solutions for Chapter: Properties of Triangles, Exercise 1: TS EAMCET 2019 (03-May Shift-2)

In a triangle $ABC, b^2\sin 2C+c^2\sin 2B=$

In a $\mathrm{\Delta }ABC,\frac{{\cos }^2\left(\frac{B-C}{2}\right)}{(b+c{)}^2}+\frac{{\sin }^2\left(\frac{B-C}{2}\right)}{(b-c{)}^2}=$

In a $\mathrm{\Delta }ABC,$ if $4a=b+c,$ then $\tan \frac{B}{2}\tan \frac{C}{2}=$

If $4$ times the area of a $∆ABC$ is $c^2-(a-b{)}^2,$ then $\sin C$

In a triangle $ABC,$ if $\cot \frac{A}{2}\cot \frac{B}{2}=K,$ then all the possible values of $K$ lies in

In a $∆ABC,$ if $\left(a-b\right)\left(s-c\right)=\left(b-c\right)\left(s-a\right)$ then $r_1, r_2$ and $r_3$ are

In an equilateral triangle $ABC, r: R:r_1$ is

In a triangle $ABC,$ if $r{r}_2=r_1{r}_3,$ then $\cos 2B=$