2009 · Q15
If cot θ= 2xy/x 2 -y 2 ,then what is cosθ equal to?
Elementary MathematicsTrigonometry
- A(x² − y²)/(x² + y²)
- B(x² + y²)/(x² − y²)
- C2xy/(x² + y²)
- D2xy/√(x² + y²)
Explanation
Simplifies to 2xy/(x² + y²).
If cot θ= 2xy/x 2 -y 2 ,then what is cosθ equal to?
Explanation
Simplifies to 2xy/(x² + y²).