6.2 Trigonometric Functions: Unit Circle Approach/55

$405^{\circ }={\frac {\pi }{4}}$

$sin={\frac {\sqrt {2}}{2}}$

$cos={\frac {\sqrt {2}}{2}}$

$tan={\frac {{\sqrt {2}}/2}{{\sqrt {2}}/2}}=1$

$csc={\frac {1}{{\sqrt {2}}/2}}={\sqrt {2}}$

$sec={\frac {1}{{\sqrt {2}}/2}}={\sqrt {2}}$

$cot={\frac {{\sqrt {2}}/2}{{\sqrt {2}}/2}}=1$