The sine ratio is positive in the first and what other quadrant?
since sine = y/r, and r is always positive, sine is positive where y is positive.
To determine in which other quadrant the sine ratio is positive, we need to understand the behavior of the sine function in each quadrant.
The unit circle can help us visualize the values of the sine function in different quadrants. In the first quadrant, both the x and y coordinates are positive, meaning that sinθ is positive.
Moving counterclockwise, in the second quadrant, the x coordinate becomes negative while the y coordinate remains positive. This means that the sine ratio is positive in the second quadrant as well.
Therefore, the sine ratio is positive in the first and second quadrants.