If `1+cos56^(0)+cos58^(0)-cos66^(0)=k cos28^(0)cos29^(@)sin33^(@)` then the value of k is

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cos56^(@)+cos58^(@)-cos66^(@)-4cos28^(@)cos29^(@)sin33^(@)=

1+cos56^(@)+cos58^(@)-cos66^(@)=?

(1+cos56^(@)+cos58^(@)-cos66^(@))/(cos28^(@)cos29^(@)sin33^(@))=

If cos56^(0)+cos58^(0)-cos66^(0)-4cos28^(0)-cos29^(@)sin33^(@)=lambda then |2 lambda|=

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

1+cos 56^0 + cos 58^0 - cos 66^0=4cos 28^0 cos 29^0 sin 33^0 .

If (cos^(3)20^(0)+cos^(3)40^(0))/(cos20^(0)+cos40^(0))=k , then the value of k is

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Write the value of cos1^(0)+cos2^(0)+cos3^(0)++cos180^(@)