Show all steps ! i am terrible at math & trig, i will also have a few more problems plus a brainlest answer a staircase of steps in a swimming pool has a vertical rise of 14 inches per step and a landing of 20 inches. answer the following questions showing each step of your work: a) what is the angle of elevation (rounded to the nearest whole degree)? b) if the landing of each step is changed to 17 inches and the elevation of each step to 21 inches, what is the new angle of elevation for the staircase (rounded to the nearest whole degree)?

Ascientist studied a population of workers to determine whether verbal praise and/or tangible rewards affect employee productivity. in the study, some workers were offered verbal praise, some were offered tangible rewards (gift cards, presents, and some were offered neither. the productivity of each participant was measured throughout the study by recording the number of daily tasks completed by each employee. which inference might the scientists make based on the given information? a.) the number of daily tasks completed by each employee may influence the dependent variable, which is whether the employee receives verbal praise, tangible rewards, or neither. b.) verbal praise and/or tangible rewards may influence the independent variable, which is the number of daily tasks completed by each employee. c.) verbal praise and/or tangible rewards may influence the dependent variable, which is the number of daily tasks completed by each employee. d.) the dependent variables, which are verbal praise and tangible rewards, may influence the number of daily tasks completed by each employee.