Hi please help me, i’ll give brainliest

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

What percent of the circle below is shaded?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.