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[.cos24^(@)+cos55^(@)+cos125^(@)+cos204^...

[.cos24^(@)+cos55^(@)+cos125^(@)+cos204^(@)+cos300^(@)=],[.1/2],[3/2],[3],[0]

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cos24^(0)+cos5^(0)+cos175^(0)+cos204^(0)+cos300^(@)

Prove that cos24^(@) + cos 55^(@) + cos125^(@) +cos204^(@) + cos300^(@) = 1/2

Evaluate : cos24^(@)+cos55^(@)+cos125^(@)+cos204^(@)+cos300^(@) .

Find the values: (v) cos 24^(@) + cos 55^(@) + cos 125^(@)+ cos 204^(@) + cos 300^(@) .

Prove that cos 24^(@)+cos 55^(@)+cos 125^(@)+cos 204^(@)+cos 300^(@)=1/2

Show that cos24^@+cos55^@+cos125^@+cos204^@+cos300^@=1/2

cos24^(@)+cos55^(@)+cos125^(@)+cos204^(@)=1)-1quad 2)0 33)14)2

cos^(@)cos2^(@)cos3^(@).......cos179^(@)=