# Three vectors

The three forces whose amplitudes are in ratio 9:10:17 act in the plane at one point to balance. Determine the angles of each two forces.

Correct result:

A =  53.1301 °
B =  154.9424 °
C =  151.9275 °

#### Solution:

$B=180-{u}_{1}=180-25.0576=154.942{4}^{\circ }=15{4}^{\circ }5{6}^{\mathrm{\prime }}33\mathrm{"}$
$C=180-{u}_{2}=180-28.0725=151.927{5}^{\circ }=15{1}^{\circ }5{5}^{\mathrm{\prime }}39\mathrm{"}$

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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.
Check out our ratio calculator.
Our vector sum calculator can add two vectors given by its magnitudes and by included angle.
Cosine rule uses trigonometric SAS triangle calculator.

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