railway DMRC CRA Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि sec15θ = cosec15θ (0° < θ < 10°) है, तो θ का मान ज्ञात कीजिए।
1
9°
2
15°
3
18°
4
3°
यदि sec15θ = cosec15θ (0° < θ < 10°) है, तो θ का मान ज्ञात कीजिए।