Cody

# Problem 43209. Create cosine function out of sine

Solution 1024160

Submitted on 20 Oct 2016
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### Test Suite

Test Status Code Input and Output
1   Fail
filetext = fileread('COS.m'); assert(isempty(strfind(filetext, 'cos')),'cos() forbidden')

cos() forbidden

2   Fail
x = 0; y_correct = 1; assert(abs(COS(x)-y_correct)<0.01)

Undefined function 'COS' for input arguments of type 'double'. Error in Test2 (line 3) assert(abs(COS(x)-y_correct)<0.01)

3   Fail
x = pi/2; y_correct = 0; assert(abs(COS(x)-y_correct)<0.01)

Undefined function 'COS' for input arguments of type 'double'. Error in Test3 (line 3) assert(abs(COS(x)-y_correct)<0.01)

4   Fail
x = pi; y_correct = -1; assert(abs(COS(x)-y_correct)<0.01)

Undefined function 'COS' for input arguments of type 'double'. Error in Test4 (line 3) assert(abs(COS(x)-y_correct)<0.01)

5   Fail
x = 3*pi/2; y_correct = 0; assert(abs(COS(x)-y_correct)<0.01)

Undefined function 'COS' for input arguments of type 'double'. Error in Test5 (line 3) assert(abs(COS(x)-y_correct)<0.01)

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