Without using trigonometric tables, evaluate
![\frac{sec^{2}36-cot^{2}54 }{cosec^{2}57-tan^{2} 33} + 2sin^{2} 22 cos^{2} 45 sec^{2} 68 \frac{sec^{2}36-cot^{2}54 }{cosec^{2}57-tan^{2} 33} + 2sin^{2} 22 cos^{2} 45 sec^{2} 68](https://tex.z-dn.net/?f=%5Cfrac%7Bsec%5E%7B2%7D36-cot%5E%7B2%7D54++%7D%7Bcosec%5E%7B2%7D57-tan%5E%7B2%7D+33%7D+%2B+2sin%5E%7B2%7D++22++cos%5E%7B2%7D+45++sec%5E%7B2%7D+68)
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Hey dear
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abhi569:
answer will be : 1 + 2cos²45°
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