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The value of cos 30 degrees in fraction form is √3/2, and 0.8660254037 in decimal form. The cosine function is a periodic function used in trigonometry. Trigonometry is a branch of mathematics that deals with angles, their properties, and applications. In real-life problems, it is a function that connects the angles and sides of a right-angled triangle. It is used to figure out the value of an unknown angle or side. When determining the value of the unknown, many trigonometry formulas and ... Discover the exact value of cos 30 degrees in fraction (√3/2), with formula, derivation & comparison table. Master trigonometry for exams with simple explanations. Learn how to find the value of cos 30 with simple steps, visuals, and examples. Master trigonometry fast with Vedantu. It is noted that the value of Sec 30 will be reciprocal of Cos 30 value. Cos 30 Value Cos 30 degrees is written as cos 30 ° and has a value in fraction form as √3/2. Cos 30 ° = √3/2 Cos 30 ° = √3/2 is an irrational number and equals to 0.8660254037 (decimal form). Therefore, the exact value of cos 30 degrees is written as 0.8660 approx.
