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1. |
The expressiontan 57 + cot 37 is equal totan 33 + cot 53 |
A. | tan 33 cot 57 |
B. | tan 57 cot 37 |
C. | tan 33 cot 53 |
D. | tan 53 cot 37 |
Answer» C. tan 33 cot 53 | |