B1 is a point on the side AC of ΔABC and B1B is joined. A line is drawn through A parallel to B1B meeting BC at A1 and another line is drawn through C parallel to B1B meeting AB produced at C1. Then

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B₁ is a point on the side AC of ΔABC and B₁B is joined. A line is drawn through A parallel to B₁B meeting BC at A₁ and another line is drawn through C parallel to B₁B meeting AB produced at C₁. Then

A) $$\frac{1}{{{\text{C}}{{\text{C}}_1}}} - \frac{1}{{{\text{A}}{{\text{A}}_1}}} = \frac{1}{{{\text{B}}{{\text{B}}_1}}}$$ B) $$\frac{1}{{{\text{C}}{{\text{C}}_1}}} + \frac{1}{{{\text{A}}{{\text{A}}_1}}} = \frac{1}{{{\text{B}}{{\text{B}}_1}}}$$ C) $$\frac{1}{{{\text{B}}{{\text{B}}_1}}} - \frac{1}{{{\text{A}}{{\text{A}}_1}}} = \frac{1}{{{\text{C}}{{\text{C}}_1}}}$$ D) $$\frac{1}{{{\text{B}}{{\text{B}}_1}}} + \frac{1}{{{\text{A}}{{\text{A}}_1}}} = \frac{1}{{{\text{C}}{{\text{C}}_1}}}$$

Answer & Solution

Correct Answer: Option B

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B1 is a point on the side AC of ABC and...

B1 is a point on the side AC of ΔABC and B1B is joined. A line is drawn through A parallel to B1B meeting BC at A1 and another line is drawn through C parallel to B1B meeting AB produced at C1. Then

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B₁ is a point on the side AC of ΔABC and B₁B is joined. A line is drawn through A parallel to B₁B meeting BC at A₁ and another line is drawn through C parallel to B₁B meeting AB produced at C₁. Then