Understand that 'sine' is fundamental in trigonometry, a branch of mathematics dealing with angles and sides of triangles. The sine of 90 degrees is always 1.
Pro Tip 2/3
Ratio Concept
'Sine' in mathematics expresses a ratio, not just any number, which helps to understand various geometrical relationships. We need the sine of this angle to find the ratio of side lengths.
Pro Tip 3/3
Not Just Triangles
Besides right triangles, 'sine' extends to functions graphed as waves, used in physics, engineering, and signal processing. The graph of the sine function resembles ocean waves.