Trigonometric Ratios of a Right Angled Triangle
In the investigative activity below, your task is to record down the trigonometric ratios ie. the sine, cosine and tangent of .
Set or
For each angle, modify the size of the triangle such that is 10, 20 or 30 units respectively.
When the angle is fixed at or , and the length of AD is set to 10, 20 and 30 units for each angle, what do you notice about the sine, cosine and tangent ratios of ?
What is the key concept behind the observation in previous question?