Class 11 Mathematics Trigonometrical Equations Relation between sides and angles, Solutions of triangles

Medium

In $\triangle ABC$,with usual notations,$2ab \sin \frac{1}{2}(A+B-C) =$

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A
$a^2-b^2-c^2$
B
$a^2+b^2-c^2$
C
$a^2+b^2+c^2$
D
$a^2-b^2+c^2$

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Class 11 Questions

Class 11

Mathematics Questions

Chapter

Trigonometrical Equations

Subtopic

Relation between sides and angles, Solutions of triangles

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