" 3.साबित Do that (Prove that) "cos80^(@...

" 3.साबित Do that (Prove that) "cos80^(@)+cos40^(@)-cos20^(@)=0

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Prove that: cos20^(@)cos40^(@)cos80^(@)=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

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

cos 20^(@) cos 40^(@) cos 80^(@)=

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

Prove that: cos100^(@)+cos20^(0)=cos40^(@)

Prove that cos40^(@) cos80^(@) cos160^(@) = -1/8

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सिद्ध कीजिए कि cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16).
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