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<?xml version="1.0" encoding="UTF-8"?>
<helpdocument version="1.0">
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<meta>
<topic id="textsbasicshared03080102xml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">Cos Function</title>
<filename>/text/sbasic/shared/03080102.xhp</filename>
</topic>
</meta>
<body>
<section id="cos">
<bookmark xml-lang="en-US" branch="index" id="bm_id3154923">
<bookmark_value>Cos function</bookmark_value>
</bookmark>
<h1 id="hd_id3154923"><variable id="Cos_h1"><link href="text/sbasic/shared/03080102.xhp">Cos Function</link></variable></h1>
<paragraph id="par_id3159413" role="paragraph">Calculates the cosine of an angle. The angle is specified in radians. The result lies between -1 and 1.</paragraph>
</section>
<paragraph id="par_id3150358" role="paragraph" xml-lang="en-US">Using the angle Alpha, the <literal>Cos</literal> function calculates the ratio of the length of the side that is adjacent to the angle, divided by the length of the hypotenuse in a right-angled triangle.</paragraph>
<paragraph id="par_id3154141" role="paragraph" xml-lang="en-US"><literal>Cos</literal>(Alpha) = Adjacent/Hypotenuse</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#functsyntax"/><bascode>
<paragraph id="par_id3145172" role="bascode" xml-lang="en-US">Cos (Number As Double) As Double</paragraph>
</bascode>
<embed href="text/sbasic/shared/00000003.xhp#functvalue"/>
<paragraph id="par_id3150449" localize="false" role="paragraph">Double</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#functparameters"/>
<paragraph id="par_id3153770" role="paragraph" xml-lang="en-US"> <emph>Number:</emph> Numeric expression that specifies an angle in radians that you want to calculate the cosine for.</paragraph>
<paragraph id="par_id3145749" role="paragraph" xml-lang="en-US">To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.</paragraph>
<paragraph id="par_id3149664" role="paragraph" xml-lang="en-US">degree=(radian*180)/pi</paragraph>
<paragraph id="par_id3146985" role="paragraph" xml-lang="en-US">radian=(degree*pi)/180</paragraph>
<paragraph id="par_id3152885" role="paragraph" xml-lang="en-US"><literal>Pi</literal> is here the fixed circle constant with the rounded value 3.14159...</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#errorcode"/>
<embed href="text/sbasic/shared/00000003.xhp#err5"/>
<embed href="text/sbasic/shared/00000003.xhp#functexample"/>
<bascode>
<paragraph id="par_id3155855" role="bascode" xml-lang="en-US">' The following example allows for a right-angled triangle the input of</paragraph>
<paragraph id="par_id3149484" role="bascode" xml-lang="en-US">' secant and angle (in degrees) and calculates the length of the hypotenuse:</paragraph>
<paragraph id="par_idm1341562416" role="bascode" localize="false" xml-lang="en-US">Sub ExampleCosinus</paragraph>
<paragraph id="par_id3150010" role="bascode" xml-lang="en-US">' rounded Pi = 3.14159</paragraph>
<paragraph id="par_idm1341559424" role="bascode" localize="false" xml-lang="en-US">Dim d1 As Double, dAngle As Double</paragraph>
<paragraph id="par_id3144764" role="bascode" xml-lang="en-US"> d1 = InputBox("Enter the length of the adjacent side: ","Adjacent")</paragraph>
<paragraph id="par_id3154491" role="bascode" xml-lang="en-US"> dAngle = InputBox("Enter the angle Alpha (in degrees): ","Alpha")</paragraph>
<paragraph id="par_id3151074" role="bascode" xml-lang="en-US"> Print "The length of the hypotenuse is"; (d1 / cos (dAngle * Pi / 180))</paragraph>
<paragraph id="par_idm1341552832" role="bascode" localize="false" xml-lang="en-US">End Sub</paragraph>
</bascode>
<section id="relatedtopics">
<embed href="text/sbasic/shared/03080101.xhp#Atn_h1"/>
<embed href="text/sbasic/shared/03080103.xhp#Sin_h1"/>
<embed href="text/sbasic/shared/03080104.xhp#Tan_h1"/>
</section>
</body>
</helpdocument>
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