In Response To 'Re: Re: Re: Re: Re: Finding deg or Radian value...'
Draw a sine wave going from, say, 0 to 2Pi. We know that a sine wave is based on a unit circle so the Y axis can go from 1 to -1.
Number the y axis as .25, .75, 1 and the negative values.
Supposing a student is asked to identify the degree or radian angles of 0.5 and draws a line parallel to the x axis. This will show the sine wave being crossed at various places. On paper the student would drop a perpendicular from the crossing point to the x axis and see that sin 0.5 = 30deg etc. They can then see other angular values that apply to 0.5, or any other value between -1 and 1.
This, of course applies to the cosine etc as well.
I thought this may be relatively easy but is beyond my knowledge at the moment.