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If the sides of a right-angled triangle are in A.P., then the sines of the acute angles are `3/5,4/5` b. `1/(sqrt(3)),sqrt(2/3)` c. `1/2,(sqrt(3))/2` d. none of these

A

`3/5,4/5`

B

`3/4,3/5`

C

`2/5,3/5`

D

none of these

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