The accompanying curves, Fig. 44 and Fig. 45, show, plotted to scale, the values of y = sin θ {\displaystyle y=\sin \theta } , and d y d θ = cos θ {\displaystyle {\dfrac {dy}{d\theta }}=\cos \theta } , for the corresponding values of θ {\displaystyle \theta } .
Fig. 44.
Fig. 45.