P is centre of the circle find m(arc QRS), m(arc QST), m(arc RTS)
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Answer:
a) m(arcQRS)=m(arcQR)+m(arcRS)
=50
o
+60
o
=110
o
(b) m(arcQST)=m(arcQS)+m(arcST)
=110
o
+100
o
=210
o
(c) m(arcRTS)+m(arcQRS)=360
o
m(arcRTS)+110
o
=360
o
m(arcRTS)=360
o
−110
o
=250
o
.
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