A triangle's angles all add up to 180 degrees. Since it's stated in the answer that angle C is a right angle, which is 90 degrees, and the other two angles are equal, the other two must be 45 degrees. The answer is B.
The best and most correct answer among the choices provided by your question is the second choice or letter A. The measures of both angles would be 45 degrees.
If A = B = 45 degrees Therefore, sin (45) = sin (45) = sqrt(2)/2 I hope my answer has come to your help. Thank you for posting your question here in Brainly.
