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বামপক্ষ\(=cosec^2 22° \cot^268°\)
\(=cosec^2 (90°-68°).\cot^268°\)
\(=\sec^268°.\cot^268°\)
\(=(1+\tan^268°).\cot^268°\)
\(=\cot^268°+1\)
\(=cosec^268°\)

ডানপক্ষ\(= \sin^2 22° + \sin^2 68° + \cot^2 68°\)
\(= \sin^2 (90°-68°) + \sin^2 68° + \cot^2 68°\)
\(=\cos^268°+ \sin^2 68° + \cot^2 68°\)
\(=1 + \cot^2 68°\)
\(=cosec^268°\)

\(\therefore\) বামপক্ষ=ডানপক্ষ (প্রমাণিত)