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8cos10^(@)cos20^(@)cos40^(@) का मान ज्ञा...

`8cos10^(@)cos20^(@)cos40^(@)` का मान ज्ञात करे ।

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

Find the value of 8 cos10^(@)cos20^(@)cos40^(@) .

If x=cos10^(@)cos20^(@)cos40^(@) , then x = ?

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

cos20^@cos40^@cos80^@=

(2cos40^(@)-cos20^(@))/(sin20^(@))

(2cos40^(@)-cos20^(@))/(sin20^(@))

Find the value of (Cos30^@-sin30^@)/ (Sin60^@+Cos60^@) (Cos30^@-sin30^@)/ (Sin60^@+Cos60^@) का मान ज्ञात करें ।

If x=cos10^(@)cos20^(@)cos40^(@), then the value of x is

cos20^(@)cos40^(@)cos60^(@)cos80^(@)=