Question

Prove that in every triangle atleast two angles are acute

Answer 1

ITS OBVIOUS BCZ SUM OF ANGLES SHOULD BE 180° now if we say 2 angles are obtuse that is greater then 90° then sum of 3 angles >180 hence triangle isnt possible

Answer 2

sum of 3angles = 180
if sum of 2 angles are obtuse i.e greater than 90 then...
sum of 3 angles will always comes greater than 180 ...
which can't be possible ...
hence no triangle will be formed ...