An isosceles triangle has angle A 30 degrees greater than angle B. Find all angles of triangle?

We'll recall the fact that an isosceles triangle has two
equal angle. Since the angle A is 30 degrees greater than B, then the equal angles are B
and C.

We also know that the sum of the angles in a
triangle is of 180 degrees, such as:

A + B + C =
180

A = B + 30

B =
C

B + 30 + B + B = 180

3B + 30
= 180

3B = 180 - 30

3B =
150

B = 50 degrees

But
B=C=>C=50 degrees.

A = B + 30 = 50+30 = 80
degrees.

Therefore, the requested angles of
isosceles triangle ABC are: A=80, B=50, C=50
degrees.