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[cos ix cos2^(@)x cos3^(@).........x los...

[cos ix cos2^(@)x cos3^(@).........x los180^(@)" is equal "],[" to "]

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cos1^(@)+cos2^(@)+cos3^(@)+.......+cos180^(@) =

cos 1^(@)cos2^(@) cos3^(@) ..... cos 180^(@) .......

cos 1^(@) + cos2^(@) + cos 3^(@) + ….+cos 180^(@) is equal to

cos 1^(@) + cos2^(@) + cos 3^(@) + ….+cos 180^(@) is equal to

cos 1^(@) + cos2^(@) + cos 3^(@) + ….+cos 180^(@) is equal to

cos 1^(@) + cos2^(@) + cos 3^(@) + ….+cos 180^(@) is equal to

cos 1^(@) + cos2^(@) + cos 3^(@) + ….+cos 180^(@) is equal to............. (A) 0 (B) 1 (C) -1 (D) 2

The value of cos1^(@)cos2^(@)cos3^(@)…cos180^(@) is

cos1^(0)+cos2^(0)+cos3^(0)+ . . .+cos180^(0) =

if sin x=cos^(2)x then cos^(2)x(1+cos^(2)x) is equal to