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
.