AP EAMCET · Maths · Vector Algebra
The length of the internal bisector of angle \(A\) in \(\triangle \mathrm{ABC}\) with vertices \(A(4,7,8), B(2,3,4)\) and \(C(2,5,7)\) is
- A \(\frac{1}{3} \sqrt{29}\)
- B \(\frac{2}{3} \sqrt{29}\)
- C \(\frac{2}{3} \sqrt{34}\)
- D \(\frac{4}{3} \sqrt{34}\)
Answer & Solution
Correct Answer
(C) \(\frac{2}{3} \sqrt{34}\)
Step-by-step Solution
Detailed explanation
Let \(A D\) be the bisector of angle \(A\) met \(B C\) at \(D\). Then \(D\) divides \(B C\) in ratio \(A B: A C\)…
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