व्यंजक [cosec (75^(@) +theta) - sec (15 ...

व्यंजक `[cosec (75^(@) +theta) - sec (15 ^(@) -theta) - tan (55^(@) +theta) + cot (35 ^(@) -theta)]` का मान है :

A

`-1`

B

0

C

1

D

`3/2`

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