railway DMRC CRA Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि \(\frac{{1 - {\rm{sinA}}}}{{1{\rm{}} + {\rm{sinA}}}} = x\) है, तो x का मान क्या है?
1
(cosecA - cotA)2
2
secA - tanA
3
(secA - tanA)2
4
cosecA - cotA