O is the centre of the circle. ab is the tangent to the circle at point p. if apq=58
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If PQ is a tangent, then <OPQ =90 degrees
And it said that it is a isosceles triangle
So it said indirectly that the another two sides of the triangle is equal
So in a triangle , it is 180 degree
And it said that it is a isosceles triangle
So it said indirectly that the another two sides of the triangle is equal
So in a triangle , it is 180 degree
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