If sin(x) = 1 3 and sec(y) = 5 4 , where x and y lie between 0 and π/2, evaluate sin(x + y)

Step-by-step explanation:

Solve the quadratic equation . The two zeros divide the -axis into three regions. Select a value that is not one of the zeros from each one of the regions. Evaluate the function at each of the selected values. If a selected value results in an evaluation of the function that is less than zero, then the region from which that value was taken is, or is part of, the solution set of the given inequality. Remember to make the end points of your solution set interval(s) inclusive because the original inequality is inclusive of zero. That is to say,  rather than .