\left. \begin array l \operatorname cos 45 ^ \circ \\ \operatorname sec 30 ^ \circ %2B \operatorname cosec 60 ^ \circ \\ \operatorname sin 30 ^ \circ %2B \operatorname tan 45 ^ \circ - \operatorname cosec 60 ^ \circ \\ \operatorname cot 45 ^ \circ %2B \operatorname cos 60 ^ \circ - \operatorname sec 30 ^ \circ \end array \right.

\left. \begin array l \operatorname cos 45 ^ \circ \\

1.	\left. \begin array l \operatorname cos 45 ^ \circ \\ \operatorname sec 30 ^ \circ %2B \operatorname cosec 60 ^ \circ \\ \operatorname sin 30 ^ \circ %2B \operatorname tan 45 ^ \circ - \operatorname cosec 60 ^ \circ \\ \operatorname cot 45 ^ \circ %2B \operatorname cos 60 ^ \circ - \operatorname sec 30 ^ \circ \end array \right.
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