Trig Ratio Estimations (Right Triangle Context)
Finding the range of values of sin, cosine and tan in the context of right-angled triangle.
Investigate the values of Trigonometric ratios
1. Move the angle ( ) using the angle slider from the smallest to the largest possible values and calculate
Record all the values in a table.
Describe the patterns for the values of
2. Move the angle ( ) using the angle slider from the smallest to the largest possible values and calculate
Record all the values in a table.
Describe the patterns for the values of
3. Move the angle ( ) using the angle slider from the smallest to the largest possible values and calculate
Record all the values in a table.
Describe the patterns for the values of
4. Write down the pattern or rule found in the values of
____ ____,
____ ____
and
________.
5. Verify and justify the patterns or rules discovered by you.
Extension:
1. Do these values work in general?
2. Could there be another approach?