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If ABCD is circular quadrilateral. If si...

If ABCD is circular quadrilateral. If side AB and DC meets at point P on extension similarly AD and BC meet at point Q. If `angleADC=85, angleBPC=40^(@)`, find `angleCQD`.

A

a)`55^(@)`

B

b)`85^(@)`

C

c)`30^(@)`

D

d)`40^(@)`

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