engineering recuitment ICAR (IARI) Assistant (Pre + Mains) 2022 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If sec 31° = x, then \(\rm sin^259^\circ+\frac{1}{sec^231^\circ}-\frac{1}{sin^259^\circ cosec^259^\circ}\) is equal to:
1
\(\frac{x^2-2}{x}\)
2
\(\frac{2-x^2}{x^2}\)
3
\(\frac{x^2-2}{x^2}\)
4
\(\frac{2-x^2}{x}\)