We need to find exact value of Tan 60+Tan 225°
We apply the reference angle by finding the angle with equivalent trigonometrical values in the first quadrant.
On the trig unit circle,
tan 225 = tan (45 + 180) = tan 45 = 1.
The exact value of tan(45) is 1.
The exact value of Tan 60° = [tex]\sqrt{3}.[/tex].
Substituting Tan225 and Tan60 values we have:
Tan 225°+Tan60°= 1+[tex]\sqrt{3}.[/tex]