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vova2212 [387]
3 years ago
11

How can i solve thistan2x/(tan4x-tan2x)​

Mathematics
2 answers:
Maslowich3 years ago
5 0

Answer: = cos 4x

\frac{tan2x}{tan4x-tan2x}\\\\=\frac{tan2x}{\frac{2tan2x}{1-tan^{2}2x }-tan2x }\\\\=\frac{tan2x(1-tan^{2}2x) }{2tan2x-tan2x(1-tan^{2}2x) }\\\\=\frac{tan2x(1-tan^{2}2x) }{tan2x(2-1+tan^{2}2x) }\\\\=\frac{1-tan^{2}2x }{1+tan^{2}2x }     \\\\=\frac{1-\frac{sin^{2}2x }{cos^{2}2x } }{1+\frac{sin^{2}2x }{cos^{2}2x } }\\\\=\frac{cos^{2}2x-sin^{2}2x  }{cos^{2}2x+sin^{2}2x  }  \\\\=\frac{cos4x}{1}\\\\=cos4x

Step-by-step explanation:

pshichka [43]3 years ago
3 0
the answer is yes i did this before so hope that helps
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If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°?
mihalych1998 [28]
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Source:
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3 years ago
Solve 3^n=5. How to solve n?
Ne4ueva [31]

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\huge\boxed{n=\log_35}

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3 years ago
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Mashutka [201]

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