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[" Q3From any point on the circle "x^(2)...

[" Q3From any point on the circle "x^(2)+y^(2)+2gx+2fy+c=0" tangent are drawnto the circle "],[" Find "x^(2)+y^(2)+2gx+2fy+c sin^(2)alpha+(8^(2)+f^(2))cos^(2)x=0],[" Find the angle betweenthem."],[" (4) The circle having "2x+y-5=0" and "2x+y+15=0" as tangents and "(-5,-5)" is "=0],[" contact of one of then,then the the equation of circle is "],[[" (A) "x^(2)+y^(2)+6x+4y-15=0," (B) "x^(2)+y^(2)+6x+4y-105=0],[" (C) "x^(2)+y^(2)+2x+6y-10=0," (D) "x^(2)+y^(2)+6x+4y-105=0]]

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If from any point P on the circle x^(2)+y^(2)+2gx+2fy+c=0, tangents are drawn to the circle x^(2)+y^(2)+2gx+2fy+c sin^(2)alpha+(g^(2)+f^(2))cos^(2)alpha=0, then find the angle between the tangents.

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