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If 3 cot A =-6, sec B =-2 sqrt10, where ...

If `3 cot A =-6, sec B =-2 sqrt10,` where `pi /2 lt A lt pi , pi lt B lt (3pi)/(2),` then `cosec A- tan B` is equal to

A

1

B

`-1`

C

`sqrt5-sqrt39`

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
C
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