<em>A </em><em>secant</em><em> is a line that </em><em>intersects a circle</em><em> in exactly </em><em>two points</em><em>. </em>
<em>When </em><em>two secants</em><em> intersect </em><em>outside a circle</em><em> then the </em><em>measure</em><em> of the </em><em>angle</em><em> </em><em>formed</em><em> between them is </em><em>one-half the positive difference of the measures of the intercepted arcs</em>
In the given figure
∵ Two secants intersected outside the circle
∵ The measures of the intercepted arcs are 30° and 130°
∵ x is the measure of the angle formed between them
because if 2+k=18 then there is no other k there and where did the additional 2 come from ?and 2k=18 then value of k is 9 + there is balance.I may be wrong correct me but i think it is no.2