what is reference angle for 315 degrees? is it 135 degrees below the x-axis or 45 degrees on the right side of the y-axis or both?
2007-05-30 05:41:34 · 3 answers · asked by Ha!! 2 in Science & Mathematics ➔ Mathematics
"Reference angle" is the smallest angle with respect to the positive or negative x-axis. It is always acute or a right angle (between 0 and 90 inclusive). It is always positive.
For 315 degrees (diagonal line in Quadrant IV), the reference angle would be 45 degrees -- because the line is 45 degrees below the positive x-axis.
See the example linked in my sources, it shows 330 degrees, which is a reference angle of 30 (NOT "negative 30").
2007-05-30 05:44:58 · answer #1 · answered by McFate 7 · 2⤊ 0⤋
x axis, thats what reference angle means. its -45 degrees below the x-axis
2007-05-30 05:44:04 · answer #2 · answered by setonrunner405 2 · 0⤊ 0⤋
19pi/6=570 570 levels would be at an attitude of 30 levels from the y axis interior the 2d quadrant. thats it the question is done. sin?=sin(540+30)=cos30=?3/2 cos?=cos(540+30)=-sin30=-a million/2 tan?=tan(540+30)=-cot30=-?3
2016-12-18 08:45:19 · answer #3 · answered by vannostrand 4 · 0⤊ 0⤋