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Answered by
2
Answer:
40
Step-by-step explanation:
cause ABC is 90 (due to diameter)
ACB is 40 (given )
CAB is 180-90+40
CAB is 50
OAT is 90(tangent and radius)
OAT= CAB+BAT
90= 50+BAT
BAT = 90-50
BAT IS 40
Answered by
2
OCB-40° then OAB is also 40°(isso scale triangle)
BAT=90-40=50°
Answer is (D) 50°
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