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

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What is the value of ((cos40^(@)-cos140^(@)))/((sin80^(@)+sin20^(@))) ?

What is the vlaue of (cos40^(@) - cos140^(@))//(sin80^(@)+sin20^(@))

sin20^(@)*cos40^(@)+cos20^(@)*sin40^(@)=(sqrt(3))/(2)

(cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan25^(@)

Prove that (cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan 25^(@)

Prove that :(cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan25^(@)

Prove that (sin70^(@)-cos40^(@))/(cos50^(@)-sin20^(@)) = 1/(sqrt(3)) .

Evaluate (2cos 40^0-cos 20^0)/(sin 20^0)=

(cos30^(@)-sin20^(@))/(cos40^(@)+cos20^(@))=(4)/(sqrt(3))cos40^(@)cos80^(@)

What is the value of ((cos10^(@)+sin20^(@)))/((cos20^(@)-sin10^(@))) ?