Asked by khaled

Prove the following identities [6 marks]
cos ๐‘ฅ cot ๐‘ฅ =
1
๐‘ ๐‘–๐‘›๐‘ฅ โˆ’ ๐‘ ๐‘–๐‘›๏ฟฝ
Answered by Anonymous
cos x * cos x/sin x = cos^2 x /sinx
= (1-sin^2 x) / sin x
=(1/sin x) - sin x
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