engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If α + β = 90° and α = 2β, then the value of cos2α + sin2β is:
1
\(\frac{1}{5}\)
2
\(\frac{1}{3}\)
3
\(\frac{1}{2}\)
4
1