Teaching UP TGT Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि \(\frac{{\cos \,{\rm{\theta }}}}{{\text{cosec}\,{\rm{\theta }}\, + \,1}}\, + \,\frac{{\cos \,{\rm{\theta }}}}{{\text{cosec}\,{\rm{\theta }}\, - \,1}}\, = \,2\), जहाँ 0 < θ < 90°, तो sin4 θ + cos4 θ का मान क्या है?
1
2
2
1
3
\(\frac{1}{2}\)
4
\(\frac{1}{4}\)