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What is the value of cos 15°? Related: Work & Energy, Important Quest...
Value of cos 15 degrees
Since 15 = 30 / 2, we have that cos(15DEG) = cos(30DEG / 2), and we can use our cosine half-angle identity with α = 30DEG. The angle with measure 30DEG is one of those special angles with well-known trigonometric function values.
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What is the value of cos 15°? Related: Work & Energy, Important Questions (with answers), Class 9, Science
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