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Problem
Problem
If
cot
A
2
=
b
+
c
a
\cot \frac{A}{2} = \frac{b+c}{a}
cot
2
A
=
a
b
+
c
, then
△
A
B
C
\triangle ABC
△
A
B
C
is a. Isosceles b. Equilateral c. Right angled d. None of these
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