" Erample "10:" Show that "cos20^(@)cos4...

" Erample "10:" Show that "cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

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Prove that cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

Prove that cos 20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

Prove that :cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

Prove that: cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

cos20^(@).cos40^(@).cos60^(@).cos80^(@) is :

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

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

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

Prove that, cos20^@cos40^@cos60^@cos80^@=1/16

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