CBSE Class 10 Answered
In given figure, PQL and PRM are tangents to the circle with centre O
at the points Q and R respectively. S is a point on the circle such
that SQL =50o and SRM=60o. Find the value of QSR.
Asked by Topperlearning User | 07 Feb, 2014, 02:50: PM
Expert Answer
In given figure, O is the centre of the circle.
Therefore, DOQL=DORM =90o
(radius is perpendicular to tangent at the point of contact)
DOSQ=DOQS= 90°-50°=40°
DRSO=DSRO=90°-60°=30°
Thus , DQSR = DOSQ+DOSR = 40°+30°=70°
Answered by | 07 Feb, 2014, 04:50: PM
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