Joni said that the area of triangle in exercise 2 part (b) can be found using the definition of the sine function.
a. what are the coordinates of point in terms of the cosine and sine functions? explain how you know.
b. explain why the y-coordinate of point is equal to the height of the triangle.
c. write the area of triangle in terms of the sine function.
d. does this method work for the area of triangle ?