TrigonometryMediumCircles & Lines ShareCircles & Lines · Medium problemEvaluate cos75∘⋅cos15∘\cos 75^\circ \cdot \cos 15^\circcos75∘⋅cos15∘.A12\dfrac{1}{2}21B34\dfrac{\sqrt{3}}{4}43C18\dfrac{1}{8}81D14\dfrac{1}{4}41E15\dfrac{1}{5}51Check Show answer Walk through it step by step Practice more like this Review this concept