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In a DeltaA B C ,\ if\ b=sqrt(3),\ c=1\...

In a ` DeltaA B C ,\ if\ b=sqrt(3),\ c=1\ a n d\ /_A=30^0`, then find `a`

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`c=1, b=sqrt{3}` and `angle A=30^{circ}`
By Cosine law,
`cos (A)=frac{c^{2}+b^{2}-a^{2}}{2 c b}`
`frac{sqrt{3}}{2}=frac{1^{2}+(sqrt{3})^{2}-a^{2}}{2 times sqrt{3} times 1}`
`3=1+3-a^{2}`
`a^{2}=1`
a=1
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