Introduction to Trigonometric Functions - 2.6.9
Use the slider below to plot points on the graphs below. You may need to reduce fractions.
Use the Point tool to plot the values of y=cos(θ), where θ is the measure of an angle in radians.
Use the point tool to plot the values of y=sin(θ), where θ is the measure of an angle in radians.
Check your graphs by clicking on "Algebra" on each graph and typing in the corresponding function next to the plus sign: y=cos(x) on the first graph and y=sin(x) on the second graph.
What do you notice about the two graphs?
Could these graphs represent functions? Explain your reasoning.
Looking at the graphs of and , at what values of do ?
Where on the unit circle do these points correspond to?