find the measure of the arc or angle indicated. assume that lines which appear tangent are tangent. just enter the number.

C. 60°

Step-by-step explanation:

The vertical angle formed inside a circle when two chords intersect each other is equal to half the sum of the measures of the intercepted arcs, based on the intersecting chords angle measure theorem.

Thus:

90° = ½(120° + arc TA)

Multiply both sides by 2

2*90 = 120 + arc TA

180 = 120 + arc TA

Subtract 120 from each side

180 - 120 = arc TA

60° = arc TA

Arc TA = 60°

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

its 50 miles away from the starting point