Further MathematicsTrigonometryWAEC
Without tables, find tan 15°.
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Answer: C. 2 − √3
tan(45° − 30°) = (1 − 1/√3)/(1 + 1/√3) = (√3 − 1)/(√3 + 1) = 2 − √3.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.