Q. 44.1( 43 Votes )

In figure 3.58, seg RS is a diameter of the circle with centre O. Point T lies in the exterior of the circle. Prove that RTS is an acute angle.



Answer :


Given RS is the diameter


ROS = 180°


m(arc RS) = 180°


Now, RTS is an external angle.





Hence, RTS is an acute angle.


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