engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि α + β = 90° और α = 2β है, तो cos2α + sin2β का मान है:
1
\(\frac{1}{5}\)
2
\(\frac{1}{3}\)
3
\(\frac{1}{2}\)
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1