Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If \(\frac{sec θ + tan θ}{sec θ - tan θ}\) = 2\(\frac{22}{31}\); then value of sin θ is?

Options:

\(\frac{45}{113}\) 

1

\(\frac{53}{115}\) 

0

Correct Answer:

\(\frac{53}{115}\) 

Explanation:

\(\frac{sec θ + tan θ}{sec θ - tan θ}\) = 2\(\frac{22}{31}\)

⇒ \(\frac{ 1+ sin θ}{ 1 - sin θ}\) = \(\frac{84}{31}\)

⇒ 31 ( 1 + sin θ ) = 84 ( 1 - sin θ )

⇒ 31 + 31 sin θ = 84 - 84 sin θ

⇒ 84 sin θ + 31 sin θ = 84 - 31

⇒ 115 sin θ = 53

⇒ sin θ = \(\frac{53}{115}\)