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2. lo the given figure, 4BTO 3. Find ZATO, where O is centre of circle and TA and TB are tangents. |
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Answer» TA and TB are tangents which are equal.Hence, angle ATO will be 30° as equal lines makes equal angleORTaking both the triangles OAT and OBT,OA = OB (radius of the circle)angle OAT = angle OBT = 90OT=OT (common side)hence by SAS congruence, the triangles are congruent with each other.Therefore angle BTO = ATO = 30 |
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