Problem 1423. Cos Function

Created by Marco Castelli

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<div style = "text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; "><div style="block-size: 21px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 10.5px; transform-origin: 407px 10.5px; vertical-align: baseline; "><div style="font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 287.5px 8px; transform-origin: 287.5px 8px; unicode-bidi: normal; "><span style="">x is the input. Find the absolute value of cosine of -x and the same value with opposite sign.</span></span></div></div></div>

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Solution Stats

288 Solutions
137 Solvers

Last Solution submitted on Oct 17, 2021

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

yurenchu on 30 Jul 2017

In addition to the weak test suite: The title of the problem says "Sinus function", yet the (incomplete) problem description mentions only "cosine" ??? Furthermore, should abs(cos(-x)) be assigned to y, or to z?

Dyuman Joshi on 19 Apr 2021

The test description has been updated. Also, new and improved test suites are added within the scope of the problem.

Solution Comments

Solution 1140390

1 Comment

1 Comment

Elmar Zander on 17 Mar 2017

Please improve the test cases. Returning 1 and -1 is complete enough with these sloppy tests.

Solution 940023

1 Comment

1 Comment

Ben Petschel on 22 Aug 2016

bad test suite

Solution 231995

1 Comment

1 Comment

Tim on 18 Apr 2013

The test suite is not very rigorous...

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Problem 1423. Cos Function

Solution Stats

Last 200 Solutions

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Solution Comments

Problem Recent Solvers137

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Problem 1423. Cos Function

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers137

Suggested Problems

More from this Author11

Problem Tags

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