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सिद्ध कीजिए कि cos 20^(@) cos 40^(@) ...

सिद्ध कीजिए कि
` cos 20^(@) cos 40^(@) cos 80^(@) = 1/8`

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cos20 ^ (@) cos40 ^ (@) cos80 ^ (@) =

Prove that cos 20^(@) cos 40^(@) cos 80^(@)=1/8

Prove that cos 20^(@) cos 40^(@) cos 80^(@)=1/8

Prove that cos20^(@) cos40^(@) cos80^(@) = 1/8

cos 40^(@) + cos 80^(@) + cos 160^(@) =

Prove that cos 20^@ cos 40^@ cos 80^(@)=1/8 .

Prove that: cos20^(@)cos40^(@)cos80^(@)=1/8

Prove that : cos20^(@)cos40^(@)cos80^(@)=1/8

Prove that: cos20^(@)cos40^(@)cos80^(@)=1/8

Prove that cos 20^(@) cos 40^(@) cos 80^(@) = (1)/(8).