state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If sin A + cos A = \(\frac{1}{2\sqrt{2}}\), then find the value of sin4A + cos4A.
1
\(\frac{79}{128}\)
2
\(\frac{7}{13}\)
3
\(\frac{79}{126}\)
4
\(\frac{5}{13}\)
5
Question Not Attempted