state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि sin A + cos A = \(\frac{1}{2\sqrt{2}}\) है, तो sin4 A + cos4 A का मान ज्ञात कीजिए।
1
\(\frac{79}{128}\)
2
\(\frac{7}{13}\)
3
\(\frac{79}{126}\)
4
\(\frac{5}{13}\)
5
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