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	<title>Madelina &#8211; Die Kluge Eule</title>
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		<title>Wie löst man # cos ^ 2x &#8211; cosx = 0 #?</title>
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		<dc:creator><![CDATA[Madelina]]></dc:creator>
		<pubDate>Sat, 22 Feb 2020 18:36:44 +0000</pubDate>
				<category><![CDATA[Trigonometrie]]></category>
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					<description><![CDATA[Wie löst man # cos ^ 2x - cosx = 0 #? Antworten: #x=0^o#; #x=90^o# Erläuterung: #Cos^2 x-Cos x=0# #Cos x(1-Cos x)=0# #Cosx=0 ; Cos x=1# #x=0^o#; #x=90^o# Test: (ein) #x=0^o# #Cos^2 0# - #Cos 0# #1^2 -1 = 0# (B) #x=0^o# #Cos^2 90# - #Cos 90# #0^2 -0= 0#]]></description>
										<content:encoded><![CDATA[<h1 class="questionTitle">Wie löst man # cos ^ 2x - cosx = 0 #?</h1>
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<h4 class="answerHeader">Antworten:</h4>
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<p>#x=0^o#;  #x=90^o#</p>
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<h4 class="answerHeader">Erläuterung:</h4>
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<p class="gt-block">#Cos^2 x-Cos x=0#<br />
#Cos x(1-Cos x)=0#<br />
#Cosx=0 ; Cos x=1#<br />
#x=0^o#;  #x=90^o#</p>
<p>Test:<br />
(ein)<br />
#x=0^o#<br />
#Cos^2 0#  -  #Cos 0#<br />
#1^2 -1 = 0#<br />
(B)<br />
#x=0^o#<br />
#Cos^2 90#  -  #Cos 90#<br />
#0^2 -0= 0#</p>
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