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I am learning trigonometry. I can solve simple trigonometric equations. But its integration with log always confuses me.

I am thinking about this sums since last two hours but can't find the solutions. Can anyone kindly solve this for me?

Use the properties of logarithm and trigonometric identities to verify the identity $\ln|\cot x|=\ln|\cos x|-\ln|\sin x|$

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    Do you remember an identity involving $\ln(x/y)$?2012-08-14

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Use the formula $\ln \frac ab=\ln a - \ln b$

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    ...and also $\left|\frac a b\right|=\frac{|a|}{|b|}$.2012-08-14