Problem 1423. Cos Function

Marco Castelli

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x is the input. Find the absolute value of cosine of -x and the same value with opposite sign.

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520 Solutions

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Last Solution submitted on Feb 11, 2026

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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.

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