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\(\large Sin \theta+Sin^{2} \theta+Sin^{3} \theta=1\)
Find the value of
\(\large Cos^{6} \theta-4Cos^{4} \theta+8Cos^{2} \theta\)
Thanks!!
Note by Naitik Sanghavi 2 years, 5 months ago
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2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
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There's no "nice" solution. You can determine the value of \(\cos^2\theta\) by squaring the first equation and solve the quartic equation, but the final value does not have a nice form.
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I'm sorry !I think the question was wrongly printed in my book!! I searched and found that its Cos^6theta-4Cos⁴+8Cos²!!
Thanks for your reply!
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Easy Math Editor
*italics*
or_italics_
**bold**
or__bold__
paragraph 1
paragraph 2
[example link](https://brilliant.org)
> This is a quote
2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
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Top NewestThere's no "nice" solution. You can determine the value of \(\cos^2\theta\) by squaring the first equation and solve the quartic equation, but the final value does not have a nice form.
Log in to reply
I'm sorry !I think the question was wrongly printed in my book!! I searched and found that its Cos^6theta-4Cos⁴+8Cos²!!
Thanks for your reply!
Log in to reply