railway RRB Junior Hindi Translator 2025 Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि sec A + tan A = 3, तब cos A निम्न के बराबर है:
1
\(\frac{4}{3}\)
2
\(\frac{3}{5}\)
3
\(\frac{3}{4}\)
4
\(\frac{5}{3}\)