# Angle

A straight line p given by the equation
$y=\frac{-8}{6}x+78$
. Calculate the size of angle in degrees between line p and y-axis.

Correct result:

x =  143.1301 °

#### Solution:

$x=9{0}^{\circ }-\mathrm{arctan}\left(-8\mathrm{/}6\right)=143.130{1}^{\circ }=14{3}^{\circ }{7}^{\mathrm{\prime }}48\mathrm{"}$

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Tips to related online calculators
For Basic calculations in analytic geometry is a 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.
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.

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