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If 4(cosec^2 57^@-tan^2 33^@)-cos 90^@ -...

If `4(cosec^2 57^@-tan^2 33^@)-cos 90^@ -ytan^2 66^@ tan^2 24^@=y/2`, then the value of y is:
यदि `4(cosec^2 57^@-tan^2 33^@)-cos 90^@ -ytan^2 66^@ tan^2 24^@=y/2` है, तो y का मान ज्ञात करें:

A

`3/8`

B

8

C

`1/3`

D

`8/3`

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