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riadik2000 [5.3K]
3 years ago
12

Please let me know ASAP

Mathematics
2 answers:
aksik [14]3 years ago
4 0

Answer:

∠ BAC = 80°

Step-by-step explanation:

The sum of the interior angles of quadrilateral ACDB = 360°

DB and DC are tangents to the circle, thus

∠ DBA = ∠ ACD = 90° ( angle between tangent/ circle at point of contact )

Thus

∠ BAC + 90° + 90° + 100° = 360°

∠ BAC + 280° = 360° ( subtract 280° from both sides )

∠ BAC = 80°

Vanyuwa [196]3 years ago
3 0
2+2=4hdjdhebshdbehsbehxhdbduzjdhzidbxuxbdhdbdhxndndid
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