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Distance between the points A(log10 1000, tan 45°), B(cosec 30°,log7 343) is A) \(\sqrt{13T}\) units B) \(\sqrt{10}\) units C) \(\sqrt{34}\) unitsD) √5 units |
Answer» Correct option is (D) √5 units Given points are \(A\,(log_{10}\,1000,tan\,45^\circ)\) \(=(log_{10}\,10^3,1)\) \(=(3,1)\) And \(B\,(cosec\,30^\circ,log_7\,343)\) \(=(2,log_7\,7^3)=(2,3)\) i.e., \(A(3,1)\;\&\;B(2,3)\) \(\therefore\) Distance between points A & B is \(AB=\sqrt{(2-3)^2+(3-1)^2}\) \(=\sqrt{(-1)^2+2^2}\) \(=\sqrt{1+4}\) \(=\sqrt{5}\) units Correct option is D) √5 units |
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