Class 11MathematicsTrigonometrical EquationsMix Examples-Trigonometrical Equations and Inequations, Properties of Triangles, Height and Distance
MediumWith usual notations,in $\Delta ABC$,if $b \cos ^{2} \frac{C}{2}+c \cos ^{2} \frac{B}{2}=\frac{3 a}{2}$,then
- A$b, a, c$ are in $A$.$P$.
- B$b, a, c$ are in $G$.$P$.
- C$a, b, c$ are in $G$.$P$.
- D$a, b, c$ are in $A$.$P$.
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Similar Questions
The angles $A, B$ and $C$ of a triangle $ABC$ are in $A.P.$ and $a : b = 1 : \sqrt{3}$. If $c = 4 \text{ cm}$,then the area (in $\text{sq. cm}$) of this triangle is:
DifficultJEE MAIN 2019
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