tan20+4sin20

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Prove that sin20(4+sec20)=sqrt(3)

tan20^(0)+4 sin20^(0)=

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The value of the expression (tan^2 20^0-sin^2 20^0)/((tan^2 20^0)(sin^2 20^0)) is__________

The value of the expression (tan^2 20^0-sin^2 20^0)/(tan^2 20^0+sin^2 20^0) is__________

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

prove that (cos20-sin20)/(cos20+sin20)=tan25

Prove that : (cos 20^0 - sin 20^0)/(cos 20^0 + sin 20^0) = tan 25^0