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(i) `cos3x=cos2x` (ii) `cos5x=sin3x` (iii) `cosmx=sinnx`

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(i) `cos3x=cos2x`
(ii) `cos5x=sin3x`
(iii) `cosmx=sinnx`
A. `(npi)/(4)+(pi)/(16), npi-(pi)/(4), ninZ`
B. `(npi)/(4)-(pi)/(16), npi+(pi)/(4), ninZ`
C. `(npi)/(4)-(pi)/(4), npi-(pi)/(16), ninZ`
D. `(npi)/(4)-(pi)/(4), npi+(pi)/(16), ninZ`
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Correct Answer - A
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