---
title: "Degrees, Grads, and Radians"
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published_at: "2020-10-27T17:18:55+00:00"
modified_at: "2024-06-23T01:04:43+00:00"
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  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "There are three methods of measuring angles: degrees, grads, and radians. However, the ZX81 with all its new trigonometric functions can only measure angles in radians. You can convert a measurement by any of the three methods to either of the remaining methods with the few short programs given in the listings below. You may…"
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publication: "Sync"
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issue: "5"
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---

# Degrees, Grads, and Radians

There are three methods of measuring angles: degrees, grads, and radians. However, the ZX81 with all its new trigonometric functions can only measure angles in radians. You can convert a measurement by any of the three methods to either of the remaining methods with the few short programs given in the listings below. You may want to add a REM statement to identify each listing for use in a program.