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If sin (alpha + beta)=1, sin (alpha- bet...

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

A

`-1`

B

0

C

none

D

1

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The correct Answer is:
D
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SSC SELECTION POST-SSC PREVIOUS YEAR PAPER HSC LEVEL (17 JAN 2019 SHIFT 2)-Section : Higher Secondary Level
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