If : sin (alpha + beta)=1 and sin (alpha...

If : `sin (alpha + beta)=1 and sin (alpha-beta)=(1)/(2),`
`"then" : tan (alpha+2beta)*tan(2alpha+beta)=`

A

1

B

`-1`

C

zero

D

none of these

Verified by Experts

The correct Answer is:

A

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