(cos 70^(@))/(sin20^(@))+(cos59^(@))/(si...

`(cos 70^(@))/(sin20^(@))+(cos59^(@))/(sin31^(@))-8sin^(2)30^(@)`is equal o

A

1

B

`-1`

C

`0`

D

`2`

Verified by Experts

The correct Answer is:

C

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