Cody

Problem 43209. Create cosine function out of sine

Solution 1086680

Submitted on 21 Dec 2016 by Martin C.
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

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

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

y = 1

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

y = 6.1232e-17

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

y = -1

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

y = -1.8370e-16