Gujarati
10-1.Circle and System of Circles
normal

वृत्त ${x^2} + {y^2} + 2gx + 2fy + c = 0$ पर बिन्दु $({x_1},{y_1})$ से खींची गयी स्पर्श रेखा की लम्बाई है

A

${(x_1^2 + y_1^2 + 2g{x_1} + 2f{y_1} + c)^{1/2}}$

B

${(x_1^2 + y_1^2)^{1/2}}$

C

${[{({x_1} + g)^2} + {({y_1} + f)^2}]^{1/2}}$

D

इनमें से कोई नहीं

Solution

(a) यह स्पष्ट है

Standard 11
Mathematics

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