1.

A sector OABO of central angle theta is constructed in a circle with centre O and of radius 6. The radius of the circle that is circumscribed about the triangle OAB, is

Answer»

`6 "COS" (THETA)/(2)`
`6 "sec" (theta)/(2)`
`3 "sec" (theta)/(2)`
`3("cos"(theta)/(2)+2)`

ANSWER :C


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