How to find sin a, sin (90°-a), and tan a?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x

Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3