Question
In any 
Hint:
We will discuss the properties of triangle formulae which will help us to solve 
of problems on triangle.
The correct answer is:
In any
S =
{ semi-perimeter }
s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
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In 
In
If 
then 
If then
If 
then 
If then
In 
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In
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, a Lewis base. This
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can’t be stored in
can’t be stored in
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The sides of a triangle are 
and 
for some 
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The sides of a triangle are and for some .Then the greatest angle of the triangle is
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