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If tanA=1a n dtanB=sqrt(3),e v a l u a t...

If `tanA=1a n dtanB=sqrt(3),e v a l u a t ecosAcosB-sinAsinBdot`

A

`(1 + sqrt3)/(2sqrt2)`

B

`(1-sqrt3)/(2sqrt2)`

C

`(2sqrt2)/(3)`

D

1

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The correct Answer is:
B
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