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If k=( sec A + tan A) ( sec B+ tan B) se...

If `k=( sec A + tan A) ( sec B+ tan B) sec C + tan C)=(sec A - tan A)(sec B- tan B)(sec C - tan C) " then " k=`

A

0

B

`pm1`

C

`pm3`

D

`pm4`

Text Solution

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The correct Answer is:
B
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