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In DeltaABC , angleA is right - angled ....

In `DeltaABC` , `angleA` is right - angled . If AB= 1 cm , AC =3 cm and BC = `sqrt(10)` cm , then find the values of cos B and sin C.

A

0

B

`sqrt3/2`

C

1

D

`1/4`

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