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Solve the trigonometric equation #tan(x+pi) + tan(x-pi)=0# ?

1 Answer

Jul 11, 2018

#x=kpi# and #k# is an integer.

Explanation:

We are using the Theorem

#tan(x)+tan(y)=sec(x)sec(y)sin(x+y)#
so we get

#tan(x+pi)+tan(x-pi)=2tan(x)#
the Solutions are
#x=kpi#

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