I’m pretty sure it is 98 degrees because you are supposed to double the angle of the arc...if that makes sense. Please correct me if I am wrong! Sorry if this doesn’t help much.
Answer:
122°
Step-by-step explanation:
The sum of interior angles in a triangle is 180°
<B + 70° + 49° = 180°
<B = 61°
The arc that sees angle B is twice of it so
The measure of arc BC is 2 × 61 = 122°
