2010 · Q37
If ABC is a triangle right angled at C and having u units, v units, w units as the lengths of its sides opposite to the vertices A, B, C respectively, then what is (tangent of the angle at A) + (tangent of the angle at B) equal to ?
Elementary MathematicsTrigonometry
- Au²/(vw)
- B1
- Cu + v
- Dw²/(uv)
Explanation
tanA+tanB = u/v+v/u = (u²+v²)/uv = w²/(uv).