2 years ago

Tan theta * tan 2theta = 1, cos 2theta =?

Mathematics

1 answer:

lilavasa [31]2 years ago

6 0

Answer:123445

Step-by-step explanation: sorry I need to answer a question to get a free answer so sorry

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$\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
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\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad a^n\implies \cfrac{1}{a^{-n}}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\left( \cfrac{2}{5} \right)^{-2}\implies \left( \cfrac{5}{2} \right)^{+2}\implies \left( \cfrac{5^2}{2^2} \right)\implies \cfrac{25}{4}\implies 6\frac{1}{4}$