Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If tanθ = \(\frac{5}{4}\), then what is the value of \(\frac{5sinθ + 4cosθ}{5sinθ - 4cosθ}\)?

Options:

\(\frac{16}{25}\)

 

\(\frac{41}{9}\)

\(\frac{41}{25}\)

\(\frac{23}{9}\)

Correct Answer:

\(\frac{41}{9}\)

Explanation:

tanθ = \(\frac{5}{4}\)

⇒ \(\frac{5 sinθ + 4 cosθ}{5 sinθ - 4 cosθ}\) = \(\frac{cosθ (5 tanθ + 4)}{cosθ (5 tanθ + 4)}\) = \(\frac{5 tanθ + 4}{5 tanθ - 4}\)

= \(\frac{5 × \frac{5}{4} + 4}{5 × \frac{5}{4} - 4}\)

= \(\frac{\frac{25}{4} + 4}{\frac{25}{4} - 4}\)

= \(\frac{41}{9}\)