9514 1404 393
Answer:
Step-by-step explanation:
The diameter cuts the circle into parts that total 180° of arc.
RS +ST = 180°
RS = 180° -ST = 180° -26° = 154°
∠RVS = 154°
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This value can be used to find x. Equating the angle measures, we have ...
RS = (15x -26)° = 154°
15x = 180 . . . . . divide by °, add 26
x = 180/15 . . . . divide by 15
x = 12
