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

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

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

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

What is the value of (cos 40^@ -cos 140^@)//(sin 80^@ + sin 20^@) ?

Evaluate the following: cos80^(@)cos20^(@)+sin80^(@)sin20^(@)

cos110^(@)+sin20=

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

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

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