Verify sin^4x-cos^4x/sin^2x-cos^2x=1

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Write the fraction or mixed number and the decimal shown by the model

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.