If A=35^(@) , B= 15^(@) and C=40^(@) , ...

If `A=35^(@) , B= 15^(@) and C=40^(@)` , then ` tan A* tan B+ tan B* tan C+ tan C* tan A= `

A

0

B

1

C

2

D

3

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The correct Answer is:

B

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