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Question -

Express cos 75┬░ + cot 75┬░ in terms of angles between 0┬░ and 30┬░.



Answer -

cos 75┬░ + cot 75┬░ = cos (90┬░ тАУ 15┬░) + cot (90┬░-15┬░)
= sin 15┬░ + tan 15┬░

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