SOLUTION: if arctan x+2 arctan1 =3π/4, tanx is =? a. 1 b. -1 c. 0 d. π/4

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Question 1125836: if arctan x+2 arctan1 =3π/4, tanx is =?
a. 1
b. -1
c. 0
d. π/4
Answer by ikleyn(52794)   (Show Source): You can put this solution on YOUR website!
.
1.  arctan(1) = .


2.  Therefore, the given equation takes the form


    arctan(x) + {{2*(pi/4)}}} = ,    or


    arctan(x) =  -  = .


3.  Therefore,  x = .

Answer.   Option  d.




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