In the following fiure. O is the centr of the circle and AD is the dia – InterviewSolution

1.	In the following fiure. O is the centr of the circle and AD is the diameter. If `angle ACB =135^@` , then find `angle DOB`. A. `135^@`B. `60^@`C. `90^@`D. `45^@`
Answer» Correct Answer - C (i) ACBD is a cyclic qudrilateral. (ii) `angle ACB and angle ADB` are supplementary angles. (iii) `angle AOB =2angle ADB`.

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