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Question
Express cos 75° + cot 75° in terms of angles between 0° and 30°.
Solution
Given that: `cos 75^@ + cot 75^@`
`= cos (90^@ - 15^@) + cot(90^@ - 15^@)`
`= sin 15^@ + tan 15^@`
Hence the correct answer is `= sin 15^@ + tan 15^@`
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