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Using tan rule, to find angle OAN.

To search for radius of circle, which is OA. To help u search the result on further parts.

Angle OAN is twice of angle OCD.

Therefore, use cos rule to get the length of MC.

To search for radius of circle, which is OA. To help u search the result on further parts.

Angle OAN is twice of angle OCD.

Therefore, use cos rule to get the length of MC.

Date Posted:
10 months ago

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Feel Free to consult me on other questions.

Date Posted:
10 months ago