Angle between lines

Calculate the angle between these two lines:

p: -8x  -1 =0 $    $
q: 3x -y +8=0 $    $

Result

α =  45 °

Solution:

Solution in text α =







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To solve this example are needed these knowledge from mathematics:

Most natural application of trigonometry and trigonometric functions is a calculation of the triangles. Common and less common calculations of different types of triangles offers our triangle calculator. Word trigonometry comes from Greek and literally means triangle calculation. Try conversion angle units angle degrees, minutes, seconds, radians, grads. For Basic calculations in analytic geometry is helpful line slope calculator. From coordinates of two points in the plane it calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of segment, intersections the coordinate axes etc.

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