1.

The equation whose roots are the \[{{n}^{th}}\] power of the roots of the equation \[{{x}^{2}}-2x\,cos\theta +1=0\] is given by

A. \[{{x}^{2}}+2x\,\cos \,\,n\theta +1=0\]
B. \[{{x}^{2}}-2x\,\cos \,\,n\theta +1=0\]
C. \[{{x}^{2}}-2x\,sin\,\,n\theta +1=0\]
D. \[{{x}^{2}}+2x\,sin\,\,n\theta +1=0\]
Answer» C. \[{{x}^{2}}-2x\,sin\,\,n\theta +1=0\]


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