AP EAMCET · Maths · Properties of Triangles
In a \(\triangle \mathrm{ABC}\), if \(r: \mathrm{R}: r_2=1: 3: 7\) then \(\sin (\mathrm{A}+\mathrm{C})+\sin \mathrm{B}=\)
- A \(0\)
- B \(\sqrt{3}\)
- C \(1\)
- D \(2\)
Answer & Solution
Correct Answer
(D) \(2\)
Step-by-step Solution
Detailed explanation
Let \(r=\mathrm{k}, \mathrm{R}=3 \mathrm{k}\) and \(r_2=7 \mathrm{k}\)…
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