Cody

Problem 635. Angle between Two Vectors

Solution 119708

Submitted on 28 Jul 2012 by Ben Petschel
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Test Suite

Test Status Code Input and Output
1   Pass
%% a = [1 0]; b = [0 1]; expected=pi/2; theta = solve_included_vector_angle(a,b) assert(0.99*expected-.001<=theta && theta<=expected*1.01+.001 ) % Is there a better way to allow tolerances?

``` theta = 1.5708 ```

2   Pass
%% a = [1 1 0]; b = [1 1 2^0.5]; expected=pi/4; theta = solve_included_vector_angle(a,b) assert(0.99*expected-.001<=theta && theta<=expected*1.01+.001 )

``` theta = 0.7854 ```

3   Pass
%% a = [2 2]; b = [0 1]; expected=pi/4; theta = solve_included_vector_angle(a,b) assert(0.99*expected-.001<=theta && theta<=expected*1.01+.001 )

``` theta = 0.7854 ```

4   Pass
%% a = [-1 1]; b = [4 0]; expected=0.75*pi; theta = solve_included_vector_angle(a,b) assert(0.99*expected-.001<=theta && theta<=expected*1.01+.001 )

``` theta = 2.3562 ```

5   Pass
%% a = [-1 2 3]; b = [1 2 4]; expected=0.161*pi; theta = solve_included_vector_angle(a,b) assert(0.99*expected-.001<=theta && theta<=expected*1.01+.001 )

``` theta = 0.5057 ```