Therefore since the trig equation we are solving is sin and it is positive (0.5 ... we need to use the rule in the 2nd quadrant. From the graph of the function, we can see that we should be ...
Many students think they've solved a trig equation ... what the sine graph looks like so that we can see how many solutions we should be expecting: Therefore, from the graph of the function ...
This applet shows how the graphs of sin(θ) and cos(θ) follow directly from the definition of these functions. Move the slider to change the angle. Observe that after the point moves once around the ...