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any triangle form on diameter then point on curve equal to 90 degree -----(1)
I) CBT IS 90 DEGREE
2)Angle A+70+50=180
Angle A=60
according to
ANGLE BAC+ ANGLE TAB=90
TAB=30
3) ACT=25
ATC=90-25=65
TAB=90-60=30
PAB IS LINE SO 180=PAT+TAB
PAT=150
PTA=90-ATC=25
TPA=5
I) CBT IS 90 DEGREE
2)Angle A+70+50=180
Angle A=60
according to
ANGLE BAC+ ANGLE TAB=90
TAB=30
3) ACT=25
ATC=90-25=65
TAB=90-60=30
PAB IS LINE SO 180=PAT+TAB
PAT=150
PTA=90-ATC=25
TPA=5
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