other govt exam CSIR Junior Secretariat Assistant (JSA) 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि cot A = k, तो sin A के बराबर है:
(मानिये कि A एक न्यून कोण है)
1
\(\frac{k^2}{\sqrt {1+k^2}}\)
2
\(\frac{1}{k}\)
3
\(-\frac{1}{k}\)
4
\(\frac{1}{\sqrt {1+k^2}}\)