\sec ^ { 2 } \theta - \frac { \sin ^ { 2 } \theta - 2 \sin ^ { 4 } \th – InterviewSolution

1.	\sec ^ { 2 } \theta - \frac { \sin ^ { 2 } \theta - 2 \sin ^ { 4 } \theta } { 2 \cos ^ { 4 } \theta - \cos ^ { 2 } \theta } = 1
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