InterviewSolution
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InterviewSolution
| 1. |
\frac{\left(\sin ^{2} 1^{\circ}+\sin ^{2} 2^{\circ}+\sin ^{2} 3^{\circ}+\ldots+\sin ^{2} 90^{\circ}\right)}{\left(\cos ^{2} 1^{\circ}+\cos ^{2} 2^{\circ}+\cos ^{2} 3^{5}+\ldots+\cos ^{2} 90^{\circ}\right)}\begin{array}{l}{\tan ^{2} 1+\tan ^{2} 2^{\circ}+\ldots+\tan ^{2} 90^{\circ}} \\ {\frac{90}{89}}\end{array} |
| Answer» | |