Q 3051291124.     `( \frac{3 \cos 43^{\circ}}{\sin 47^{\circ}} )^2 -\frac{\cos 37 ^{\circ}. cosec 53^{\circ}}{\tan 5^{\circ}. \tan 25^{\circ}. \tan 45^{\circ}. \tan 65^{\circ} \tan 85^{\circ}} =` ?


A

7

B

0

C

1

D

8

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