2017
Mathematics
67ca00ce0c643c71d77dee1f
Given the quadrilateral RSTO inscribed in the circle with O as centre. Find the size angle x and given RST = 60°
A.
100o
B.
140°
C.
120°
D.
10°
Correct Answer: 120°
Explanation
If RST = 60° RXT = 2 × RST (angle at the centre twice angle at the circumference) RXT = 2 × 60 = 120°
If RST = 60° RXT = 2 × RST (angle at the centre twice angle at the circumference) RXT = 2 × 60 = 120°THIS WEEK's
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