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साबित करें कि tan 40^(@) + 2 tan 10^(@)...

साबित करें कि `tan 40^(@) + 2 tan 10^(@) = tan 50^(@)`

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tan 70^(@) - tan 20^(@) -2 tan 40^(@)=

tan 70^(@) - tan 20^(@) -2 tan 40^(@)=

Prove that tan 40^(@) + 2 tan 10^(@) = tan 50^(@)

Prove that tan40^(@) + 2tan10^(@) = tan50^(@)

Prove that tan40^(@) + 2tan10^(@) = tan50^(@)

Tan20^(@) + 2Tan50^(@) =

tan40^(@)+2tan10^(@) is equal to

tan50^(@)-2tan10^(@)=

Prove that tan 70^(@) - tan 20^(@) - 2 tan 40^(@) = 4 tan 10^(@) .