3 years ago

Find the value of x. A.124 B.57 C.72 D.90

Mathematics

1 answer:

Llana [10]3 years ago

3 0

9514 1404 393

Answer:

x = 90°

Step-by-step explanation:

Half the sum of x and 120° is the angle where the chords cross, 105°. Then ...

105° = (1/2)(x +120°)

210° = x + 120°

210° -120° = x = 90°

_____

<em>Additional comment</em>

z is the arc that finishes the circle: 360° -90° -68° -120° = 82°.

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