Quantitative Aptitude Trigonometry

ఒకవేళ  sinA + sin2A = 1 అయితే, వ్యక్తీకరణ యొక్క విలువ (cos2 A + cos4A) is ______.

1
\(\frac{3}{2}\)
2
1
3
2
4
\(\frac{1}{2}\)

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