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Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11
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Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11-example-1
User Rolevax
by
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2 Answers

6 votes

Answer:

90

Explanation:

User Salman Ghumsani
by
5.3k points
7 votes

Use the note that Linear pairs have sum 180°

  • TD is a straight line


\\ \rm\rightarrowtail m\overset{\frown}{CD}+122=180


\\ \rm\rightarrowtail m\overset{\frown}{CD}=180-122=58°

Now

  • DB arc be x

  • A whole angle is 360° or 2π


\\ \rm\rightarrowtail x+122+58+90=360


\\ \rm\rightarrowtail x+270=360


\\ \rm\rightarrowtail m\overset{\frown}{DB}=90°

User Klas Mellbourn
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5.8k points
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