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

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

A

`2 tan 20^(@)`

B

`tan 40^(@)`

C

`4 tan 10^(@)`

D

`tan 10^(@)`

Verified by Experts

The correct Answer is:

C

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