Question

Pq is a common chord of two circle apb is a secant line joining point a and b on the two circles. 2. Tangents ac and bc are drawn. If acb=45. Thenn what is aqb

Answer 1

As PA is tangent to circle and PBC is a secant. So, from secant rule:<br>

eq(1)<br> As, PA is tangent to AC,

eq(2)<br> Given that PB=AB, So,<br>

eq(3)<br> From eq(2) and eq(3),<br>

<br> So, PA = AC, putting this in eq(1)<br>