Prove that: sin8A/1-cos8A=cot4A

Mathematics

1 answer:

nikitadnepr [17]3 years ago

8 0

Step-by-step explanation:

Recall the identity

$\tan \frac{A}{2}= \dfrac{1 - \cos A}{\sin A}$

We can see that

$\dfrac{\sin 8A}{1 - \cos 8A} = \dfrac{1}{\tan 4A}= \cot 4A$

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neonofarm [45]

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Step-by-step explanation:

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gladu [14]

We know that
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also
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we have
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therefor

p/(x^2-5x+6)=d/d times (x+4)/(x-2)
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lapo4ka [179]

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