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prove that, |{:(1 ,cosx-sin x,cosx +si...

prove that,
`|{:(1 ,cosx-sin x,cosx +sin x),(1,cos y-siny,cosy+sin y),(1,cosz-sinz ,cosz+sin z):}|=2|{:(1,cosx , sinx),(1,cosy,siny),(1,cosz,sinz):}|`

Text Solution

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The correct Answer is:
`2|{:(1,cos x,sin x),(1,cosy,siny),(1,cosz,sinz):}|`
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