The trigonometric function is
, where
lies in quadrant II.
Right angled triangle definition of trigonometric function
.
Opposite side =
and hypotenuse =
.
Pythagorean theorem :
\For right angled triangle, square of Hypotenuse is equal to sum of squares of other two sides.
\

Substitute the values of opposite side =
and hypotenuse =
in above theorem.




Adjacent side
.
Since,
lies in quadrant II, sine and cosecant functions are positive and remaining trigonometric functions are negative.
,
,
,
,
.
The values of six trigonometric functions are
,
,
,
,
, and
.