[" 2.The value of "tan20^(0)+2tan50^(@)-tan70^(@)" is : "],[[" a) "1," b) "0]]

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The value of tan20^(@)+2 tan50^(@)-tan70^(@), is

The value of tan10^(@)tan50^(@)tan70^(@) is

tan20^(@)+2tan50^(@)=

tan10^(@)-tan50^(@)+tan70^(@)

Find the value of tan20^(@)+2tan50^(@)

tan10^(@)-tan50^(@)+tan70^(@)=?

The value of (tan70^(@)-tan20^(@))/(tan50^(@))=