Class 11MathematicsTrigonometrical EquationsRelation between sides and angles, Solutions of triangles
MediumIn a $\Delta ABC$,if $2s = a + b + c$ and $(s - b)(s - c) = x \sin^2 \frac{A}{2}$,then $x =$
- A$bc$
- B$ca$
- C$ab$
- D$abc$
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Similar Questions
In $\Delta ABC,$ if $a = 16, b = 24$ and $c = 20,$ then $\cos \frac{B}{2} = $
Easy
View SolutionIn $\triangle ABC$,if $(a-b)(s-c)=(b-c)(s-a)$,then $r_1, r_2, r_3$ are in
In a $\Delta ABC$,if $C = 90^{\circ}$,then $\frac{a^{2} + b^{2}}{a^{2} - b^{2}} \sin(A - B)$ is equal to:
If $\tan \frac{B - C}{2} = x \cot \frac{A}{2},$ then $x = $
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View SolutionThe area of the triangle $ABC$ is $10\sqrt{3} \text{ cm}^2$,angle $B$ is $60^{\circ}$ and its perimeter is $20 \text{ cm}$. Then $\ell(AC) = $ (in $\text{ cm}$)
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