Question 918161: Find the terminal point for t = - 3π/4
please explain how this is solved.
Thank you Found 2 solutions by ewatrrr, rothauserc:Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! we assume we are dealing with the unit circle, then
t = -3π/4 = -3 * π/4 = -135 degrees or 225 degrees
note that we can rotate clockwise from the x axis in quadrant 1 or counter clockwise from the x axis in quadrant 1 to get the degrees of the angle to the terminal point.
we now use sine and cosine to determine the coordinates of the terminal point
radius of unit circle is 1
y = sin(225)*1 = −0.707106781
x = cos(225)*1 = −0.707106781
terminal point = (−0.707106781, −0.707106781)
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