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PQ is a tangent at a point C to a circle with centre O.If AB is a diameter and angle CAB=30,find angle PCA

Posted by Manisha Kumari 6 years, 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Shubhangi Bura 6 years, 11 months ago

AO=OC (radii of same circle) .: tri AOC is isocles triangle Angle CAB= ang CAO =30 =ang ACO ( iso triangle theorem) Ang PCO =90(OC Perpendicular PQ) Ang PCA+ang ACO =90 PCA+30=90 PCA=90 –30=60

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Khush Pandya 6 years, 11 months ago

75 degree

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Honey ☺☺☺ 6 years, 11 months ago

60 degrees

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