In a triangle with angles A, B, and C, A is 60 degrees, and B is two times as big as C. Calculate the angle of B.
Step-by-step reasoning process below:
80
Since the angles in a triangle adds up to 180, and A is 40 degrees, B and C have a total of 180 - 60 = 120 degrees.

Since B is two times bigger than C, the total of the angles of B and C is equal to 2C + C = 120.

3C = 120.

The angle of C is C = 120 / 3.

C is 40.

Since B is two times as big as C, B is 2 * 40 = 80 degrees.

.

The answer is 80