यदि 6 (sec^(2)59^(@) -cot^(2)31) - (2)/(...

यदि `6 (sec^(2)59^(@) -cot^(2)31) - (2)/(3) sin 90^(@) - 3tan^(2) 56^(@) y tan^(2)34^(@) = (y)/(3)` है, तो y का मान है :

A

`(8)/(5)`

B

`-(8)/(5)`

C

`(2)/(3)`

D

`(-2)/(3)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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