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In triangleABCAB=c,BC=a,AC=b and angleBA...

In `triangleABCAB=c,BC=a,AC=b` and `angleBAC=theta` then which is not the area of `triangleABC` is ……………. (`theta` is acute).

A

`1/2ab sintheta`

B

`1/2ca sintheta`

C

`1/2bc sintheta`

D

`1/2b^2sintheta`

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