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The three sides of a right-triangle are ...

The three sides of a right-triangle are in GP (geometric progression). If the two actue angles be `alphaandbeta`, then `tanbeta` are

A

`(sqrt5+1)/(2)and(sqrt5-1)/(2)`

B

`sqrt((5+1)/(2))andsqrt((5-1)/(2))`

C

`sqrt5and(1)/(sqrt5)`

D

`(sqrt5)/(2)and(2)/(sqrt5)`

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