The angles of a triangle have ratios 3:4:5 relative to each other. Determine which angle below corresponds to one of the angles of this triangle.  Choose the correct choice from the following choices:
A) 40Â°
B) 60Â°
C) 80Â°
D) 100Â°
E) 120Â°
The three angles of a triangle add up to 180Â°. Knowing the ratios, we can formulate this expression:   3x + 4x + 5x = 180Â°   12x = 180Â°   x = 15Â°   Now, find the angles within the triangle.   3x = 3(15Â°) = 45Â°   4x = 4(15Â°) = 60Â°   5x = 5(15Â°) = 75Â°   Therefore, the answer is 60Â°, or 60Â°.
<result>B</result>
The angles of a triangle have ratios 3:4:5 relative to each other. Determine which angle below corresponds to one of the angles of this triangle.