•T
4. In figure 3.58, seg RS is a diameter of the
circle with centre 0. Point T lies in
the exterior of the circle. Prove that
Z RTS is an acute angle.
S
R
O
Fig. 3.58
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Step-by-step explanation:
angle Ros isa stright angle =180
then angleORt and angle ots are angles on same base and angletso= 90
therefore angle R +T+R =180
so angleT is less than 90
so it is a acute angle
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