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Gulafsha Pathan

· started a discussion

· 1 Months ago

Language of question (Question: 226597.0 )

Language of que is not correct. Hindi and eng are not same...what is the diagram

Question:

 AB is the diameter of a circle with center O and CD is the chord of the circle. If  ∠   COB =105°,then the value of  ∠   CDA is?

Options:
A)

45°

B)

65°

C)

  75°2   

D)

  85°2   

Solution:

Ans: (c)


  ∠   COB +  ∠   AOC = 180°

⇒∠   AOC = 180° – 105° = 75°

∴∠   CDA =  12∠   AOC =  75°2   

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