In the diagram above RST is a tangent to circle... - WAEC Mathematics 1999 Question
In the diagram above, RST is a tangent to circle VSU center O ∠SVU = 50° and UV is a diameter. Calculate ∠RSV.
A
90°
B
50°
C
45°
D
40°
correct option: d
< VSU = 90° (angle in a semi-circle)
\(\therefore\) < SUV = 180° - 90° - 50°
= 40°
< RSV = 40° (angle which chord makes tangent = angle in alternate segment)
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