This shows the graphing of y=sin x using the unit circle.
Press the '+' sign several times.
Inside the circle, the red line is the opposite side;
the black radius is the hypotenuse (and it's 1)
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As you press the '+' button, the next angle is plotted, and the value of 'O over H' is worked out and graphed. Notice that at 90 degrees, 'O' and 'H' are equal, so sin90 = 1
What happens at angles greater than 180 degrees? Can you explain why this happens?
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