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In DeltaABC, a =125, b=62 and c=123, fin...

In `DeltaABC`, a =125, b=62 and c=123, find the value of sinB.

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a=96, b=104, c=40
`s=(a+b+c)/(2)=(96+104+40)/(2)=120`
and `Delta=sqrt(s(s-a)(s-b)(s-c))`
`=sqrt(120(120-96)(120-104)(120-40))`
`=sqrt(120xx 24 xx 16 xx 80)`
`=1920` sq. unit. Ans.
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