can we prove LMN is congruent to XYZ ? if so, witch postulate can we use to do so ? if not , explain why.

Mathematics

1 answer:

avanturin [10]3 years ago

4 0

Is it a triangle not

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Rewrite 9cos 4x in terms of cos x.

rosijanka [135]

$\bf \qquad \textit{Quad identities}\\\\
sin(4\theta )=
\begin{cases}
8sin(\theta )cos^3(\theta )-4sin(\theta )cos(\theta )\\
4sin(\theta )cos(\theta )-8sin^3(\theta )cos(\theta )
\end{cases}
\\\\\\
cos(4\theta)=8cos^4(\theta )-8cos^2(\theta )+1\\\\
-------------------------------\\\\
9cos(4x)\implies 9[8cos^4(x)-8cos^2(x)+1]
\\\\\\
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as far as the previous one on the 2tan(3x)

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Paha777 [63]

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3 years ago

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