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The value of $\sin ^2 60^{\circ} \cos ^2 45^{\circ}+2 \tan ^2 60^{\circ}-{cosec}^2 30^{\circ}$ is equal to: |
$\frac{17}{24}$ $\frac{19}{8}$ $-\frac{17}{24}$ $-\frac{19}{8}$ |
$\frac{19}{8}$ |
sin²60º . cos²45º + 2 tan²60º - cosec²30º = \(\frac{3}{4}\) × \(\frac{1}{2}\) + 2 × 3 - 4 = \(\frac{3}{8}\) + 2 = \(\frac{19}{8}\) |
