SSC_CPO_PYQ_27_June_2024_S3_Q104

Question:

If tan θ = 3/10, then find the value of ((1 + sin θ)(1 – sin θ)) / ((1 + cos θ)(1 – cos θ)).

Question Figure

यदि tan θ = 3/10 है, तो ((1 + sin θ)(1 – sin θ)) / ((1 + cos θ)(1 – cos θ)) का मान ज्ञात कीजिए।

Question Figure

Options:

  • a) 50/3
  • b) 100/7
  • c) 100/9
  • d) 100/3
  • a) 50/3
  • b) 100/7
  • c) 100/9
  • d) 100/3

correct answer : c)

Explanation:

The expression can be simplified as: ((1 + sin θ)(1 – sin θ)) / ((1 + cos θ)(1 – cos θ)) = (1 – sin^2 θ) / (1 – cos^2 θ) = cos^2 θ / sin^2 θ = cot^2 θ = 1 / tan^2 θ. Given tan θ = 3/10, so cot^2 θ = (10/3)^2 = 100/9.

व्यंजक को इस प्रकार सरल किया जा सकता है: ((1 + sin θ)(1 – sin θ)) / ((1 + cos θ)(1 – cos θ)) = (1 – sin² θ) / (1 – cos² θ) = cos² θ / sin² θ = cot² θ = 1 / tan² θ। दिया गया है tan θ = 3/10, इसलिए cot² θ = (10/3)² = 100/9।

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top