1.

From a point on the circle x^(2) + y^(2) + 2gx + 2fy + c = 0 two tangents are drawn to the circle x^(2) + y^(2) 2 gx + 2fy + c sin ^(2) alpha + (g^(2) + f^(2)) cos^(2) alpha= 0 ( 0 lt alpha lt pi//2).

Answer»


ANSWER :`therta = 2 alpha `
Hence PROVED.


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