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| 1. |
\frac 5 \operatorname sin ^ 2 30 ^ \circ %2B \operatorname cos ^ 2 45 ^ \circ %2B 4 \operatorname tan ^ 2 60 ^ \circ 2 \operatorname sin 30 ^ \circ \operatorname cos 60 ^ \circ %2B \operatorname tan 45 ^ \circ |
| Answer» | |