Published by:
CGP EDU Academic Team
Published on: August 11, 2026
If in a triangle ABC , a , b , c and angle A is given and 
then
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
From cosine formula, 
or 
which is quadratic equation in b . 
Two triangles will be obtained, but this is possible when two values of third side are also obtained. Clearly two values of side b will be b 1 and 
. Let these are roots of above equation.
Sum of roots 
= 
.
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