answer to my question

Asked by chiku999 | 16th Oct, 2009, 12:23: PM

Expert Answer:

angle QPB=angle  PAB...(angle made by a chord with a tangent is equal to the angle made by the chord in the alternate segment)

simly

angle PQB= angle QAB...

adding the two equations we get,

QPB+PQB=PAB+QAB

so

180-PBQ=PAQ

so

PBQ+PAQ=180

Answered by  | 20th Oct, 2009, 06:40: AM

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