Cody

# Problem 635. Angle between Two Vectors

Solution 3323673

Submitted on 22 Oct 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
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?

Error in solution: Line: 2 Column: 42 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

2   Fail
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 )

Error in solution: Line: 2 Column: 42 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

3   Fail
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 )

Error in solution: Line: 2 Column: 42 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

4   Fail
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 )

Error in solution: Line: 2 Column: 42 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

5   Fail
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 )

Error in solution: Line: 2 Column: 42 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

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