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1. |
Q: Find the value of $$\left({sin 35°\over cos55°} \right)^2+\left({cos55°\over sin 35°} \right)^2 \ -2 sin^{3}30°$$ |
A. | $${7\over5}$$ |
B. | $${7\over4}$$ |
C. | 0 |
D. | $${5\over7}$$ |
Answer» C. 0 | |