If 4 tan θ = 3, then $ \frac{4sinθ-cosθ+1}{4sinθ+cosθ-1} $= _________.
Answer & explanation
Correct answer: option 4
4 tan θ = 3
tan θ = \(\frac{3 }{4}\)
P2 + B2 = H2
32 + 42 = H2
H = 5
4 sin θ - cosθ + 1 = 4 × \(\frac{3 }{5}\) - \(\frac{4 }{5}\) + 1
= \(\frac{12 - 4 + 5 }{5}\) = \(\frac{13 }{5}\)
& 4 sin θ + cosθ - 1 = 4 × \(\frac{3 }{5}\) + \(\frac{4 }{5}\) - 1
= \(\frac{12 + 4 - 5 }{5}\) = \(\frac{11 }{5}\)
Now , \(\frac{ 4 sin θ - cosθ + 1}{4 sin θ + cosθ - 1 }\)
= \(\frac{13 }{11}\)