P is a point on one side of the straight line UV and P moves in the same direction as UV. If the straight line ST is on the locus of P and angle VUS = 60°, find angle UST.

  • A 310°
  • B 130°
  • C 80°
  • D 50°
jamb 1999mathematics

The correct answer is B. 130°

Since ST is parallel to UV => angle USR = 50°(alternate to VUS.

Angle UST = 180° - 50° = 130° (angle on a straight line)

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