in the figure, PA and PB are the tangent to the circle with Centre O. if angle OAB=25° then find angle APB.
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angle APB equals 65°
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angle PAO=90 (ANGLE SUBTENDED BY TANGENT WITH RADIUS OF CIRCLE)1
ANGLE PAO=ANGLE OAB +ANGLE PAB
ANGLE PAB=65°
NOW IN TRIANGLE PAB
ANGLE PAB +ANGLE PBA +ANGLE APB=180°
<APB=50°
ANGLE PAO=ANGLE OAB +ANGLE PAB
ANGLE PAB=65°
NOW IN TRIANGLE PAB
ANGLE PAB +ANGLE PBA +ANGLE APB=180°
<APB=50°
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