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OpenStudy (anonymous):
tan2x-cotx=0 find answer using double angle formula
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OpenStudy (anonymous):
We have: tan2x=cotx⇒tan2x=1tanx Double-angle formula: 2tanx1−tan2x=1tanx Clear denominators: 2tan2x=1−tan2x We have: 3tan2x=1⇒tan2x=13⇒tanx=±13√ Therefore: x=π6,5π6,\7 π6,11π6
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