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Vikas

· started a discussion

· 1 Months ago

Worng answer (Question:694593.0)

And should be 1

Question:

The circumcentre of a triangle ABC is O. If ∠BAC 85° and ∠BCA = 75°, then the value of \(\angle \)COA?

Options:
A)

40°

B)

60°

C)

70°

D)

90°

Solution:

Given-

∠BAC = 85°

∠BCA = 75°

∠ABC+∠BCA+∠CAB=180∘ 

∠ABC=20∘

∴∠COA=2×∠ABC

∠COA=2×20=40∘


Knowledge Expert

· commented

· 1 Months ago

Dear student
We have updated the question, please solve it again.

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