Riley did not plot {{MATH_29}}.{{CMD_30}} {{CMD_31}}Riley did not take the derivative correctly.{{CMD_32}} {{CMD_33}}Riley was working in degrees, not radians.{{CMD_34}} {{CMD_35}}{{MATH_36}}{{CMD_37}} {{CMD_38}}Riley computed the slope incorrectly.{{CMD_39}} {{CMD_40}} {{CMD_41}} In calculus, we work with radians. Working in degrees will produce erroneous answers. {{CMD_42}} {{CMD_43}}