Question

Find the values of cot 225°

Answer 1

cot 225° = \(\frac{1}{ tan 225°}=\frac{1}{tan(180°+45°)}\)

= \(\frac{1}{(\frac{tan180°+tan 45°}{1-tan180° tan 45°})}\)

= \(\frac{1}{(\frac{0+1}{1-0(1)})}\)

= \(\frac{1}{(\frac{1}{1})}\)

=1