No, angle B or angle C cant be obtuse
since its stated in the question that,
angle A >9O degrees
assuming we say,
Angle B is obtuse.
that is Angle B > 9O degrees
So, we get the sum of two angle is greater than 18O degrees,
that is
18O degrees
But recall, in order to form a triangle the sum of all the three angles must be equal to 18O degrees.
