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\frac \cosec ^ 2 63 ^ \circ %2B \tan ^ 2 24 ^ \circ \cot ^ 2 66 ^ \circ %2B \sec ^ 2 27 ^ \circ %2B \frac \sin ^ 2 63 ^ \circ %2B \cos 63 ^ \circ \sin 27 ^ \circ %2B \sin 27 ^ \circ 2 ( \cosec ^ 2 65 ^ \circ - \tan ^ 2 25 ^ \circ ) |
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