Find the angle between the OA ray and the OX semiaxis if A (-1; 3)
| December 18, 2020 | education
According to the condition, point A is located at coordinates (-1; 3). Means
x = -1 y = 3
This means that the ray is located in the second quarter and forms 30 degrees with the oy axis.
And since the oy axis is perpendicular to the oy axis, the angle between them is 90 degrees.
This means the total angle between the ray and the oh axis is 90 + 30 = 120 degrees
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