plz answer the given objective question with full explanation ...
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we know that , angle A + Angle B + angle C = 180 degree
thus angle A = 180 - Angle B- angle C
angle DBC = 180 - Angle B and angle BCE = 180 - angle C
angle DBC + angle BCE = 360 - angle C- Angle B
angle PVC + angle PCB = half angle DBC + half angle BCE = 180- half angle C- half Angle B
angle BPC = 180 - angle BBC - angle PCB = half angle C + half Angle B = 90 - half angle A
thus angle A = 180 - Angle B- angle C
angle DBC = 180 - Angle B and angle BCE = 180 - angle C
angle DBC + angle BCE = 360 - angle C- Angle B
angle PVC + angle PCB = half angle DBC + half angle BCE = 180- half angle C- half Angle B
angle BPC = 180 - angle BBC - angle PCB = half angle C + half Angle B = 90 - half angle A
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