Maths-
General
Easy
Question
If 
then the 
is
- isosceles
- right angled
- equilateral
- scalene
Hint:
In this question we have to use trigonometric formula 
. Then we will Calculate A.M and G.M and check whether they are equal or not. If they are equal then this is only possible when all the terms are equal.
The correct answer is: equilateral
In this question we have to find the type of triangle
We are given 
We know that in a triangle
=> 
=>
=> 
=> 
=>
=> We know that 
=>
=> 
=>
=> 
Here we are getting 
,
It is possible when 
=>
All the angles are equal.
Hence, the given triangle is equilateral triangle
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