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Post-UTME Mathematics 2012 Objective — Question 2

Question 2 of 11 from the Post-UTME Screening (Post-UTME) Mathematics 2012 Objective paper, with the correct answer and a full explanation.

If tan(x+45) degrees =2, find without using tables the value of tan x

A. 1/3Correct
B. 2/3
C. 4/3
D. 3/4

Explanation

Using tan(x+45)=(tanx+1)/(1-tanx)=2, solving gives tanx=1/3.

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