Page 13 - Dhea Anisah Putri_4193111017

The value of the trigonometric functions of the angles of 30° and 60° can be determined
as follows

Example question 1

It is known that triangle ABC is a right angled triangle at C with side length =5 units
and side length b = 2 units. If < = , determine the value of the six

trigonometric ratios for the angle .

Solution
The value of c is calculated using the Pythagorean
Theorem:

c=3

So, the value of the trigonometric ratio of angle is:

√5
sin = =
3
√5
cos = =
3
√5
tan = =
3

√5
sec = =
3
√5
csc = =
3
√5
cot = =
3