Question

if sin theta = cos theta ,then. a). ∆is isosceles. b) ∆is right angled. c) both a and b d) b but not a

Answer 1

According to me, it is an isosceles triangle...
Bcoz, Sin x =Cos x
We know that, Sin x = Opposite /hypo.
Cos x = Adjacent /hypo.
As both are equal ,
Opposite =Adjacent
As the both sides of a triangle are equal,
The triangle is Isosceles