Categories > trigonometry > Relation between sides and angles > If in triangle $ABC,\frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}=\frac{\sin (A-B)}{\sin (A+B)}$ , then the triangle is

trigonometry

Question: If in triangle $ABC,\frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}=\frac{\sin (A-B)}{\sin (A+B)}$ , then the triangle is


1) Right angled
2) Isosceles
3) Right angled or isosceles
4) Right angled isosecles
Solution: Explanation: No Explanation
Relation between sides and angles Solutions of triangles

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