By using the formulae expressing and in terms of t, where or otherwise, show that .

Deduce that

I have done the first part using the identities and where , but I don't know how to do the second part.

Thanks

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- July 15th 2009, 12:25 AMarzeDeduce to inequality
By using the formulae expressing and in terms of t, where or otherwise, show that .

Deduce that

I have done the first part using the identities and where , but I don't know how to do the second part.

Thanks - July 15th 2009, 12:38 AMNonCommAlg
- July 15th 2009, 12:39 AMred_dog
We have to prove that

The first inequality is obviously true.

For the second:

- July 15th 2009, 01:47 AMsimplependulum

for part 2 , besides using

here is another method :