Question

If tan^2 (π-a)/4 +tan^2 (π-b)/4
+ tan^2 (π-c)/4 = 1, then ∆ABC is
a. equilateral
c. scalene
b. isosceles
d. none of these​

Answer 1

Answer:

Here all Sides are equal ...By Tan²(π-0) is tan only then it is a Equaletaral triangle