railway DFCCIL MTS 2025 Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि secθ + tanθ = 2 + √5 और θ एक न्यून कोण है, तो sin θ का मान है:
1
\(\frac{{\sqrt 5 }}{5}\)
2
\(\frac{{2\sqrt 5 }}{5}\)
3
\(\frac{{3}}{5}\)
4
\(\frac{{1 }}{5}\)