BASIC ANGLES 2.0 / 5 based on 1 rating ? MathematicsAll LevelsOther Created by: Melissa LeeCreated on: 20-12-12 21:41 tan 120 is a negative number because the angle, 120, lies in the second quadrant 1 of 5 only sine 0 to 180 is a positive number. 1st and 2nd quadrant 2 of 5 cos(180-@) is -cos@ 180-@ lies in the 2nd quadrant 3 of 5 -675 degree equals to -675+2(360)= 45 which is 1st quadrant 4 of 5 -460 degree equals to -460 + 360= -100, which is the 3rd quadrant 5 of 5
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