2010 · Q81
If 7 cos² θ + 3 sin² θ = 4 and 0 < θ < π/2, then what is the value of tan θ ?
Elementary MathematicsTrigonometry
- A√7
- B7/3
- C3
- D√3
Explanation
cos²θ=1/4 gives θ=60°, tanθ=√3.
If 7 cos² θ + 3 sin² θ = 4 and 0 < θ < π/2, then what is the value of tan θ ?
Explanation
cos²θ=1/4 gives θ=60°, tanθ=√3.