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" (i) "cos10^(@)cos30^(@)cos50^(@)cos70^...

" (i) "cos10^(@)cos30^(@)cos50^(@)cos70^(@)=(3)/(16)

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cos10^(0)cos30^(0)cos50^(@)cos70^(0)

Prove that cos10^(@)cos30^(@)cos50^(@)cos70^(@)=(3)/(16)

Prove that cos10^(@)cos30^(@)cos50^(@)cos70^(@)=(3)/(16)

Prove that: cos10^(0)cos30^(@)cos50^(@)cos70^(@)=(3)/(16)

cos 10^(@) cos 30^(@) cos 50^(@) cos 70^(@) =(3)/(16)

cos 10^(@) cos 30^(@) cos 50^(@) cos 70^(@) =

Prove that cos10^@cos30^@cos50^@cos70^@=3/(16) .

The value of 16cos 10^(@) cos30^(@) cos50^(@)cos70^(@) "is"