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Learn how to find the value of cos 120 using two angles, 90 and 180 degrees, and their cosine functions. See the trigonometric table for other angles and their values, and test your knowledge with a quiz.
Learn how to find the value of cos 120 degrees using the unit circle, trigonometric functions, and identities. See examples of cos 120 degrees in different expressions and FAQs.
Learn how to use the trigonometric identity cos α + β = cos α cos β - sin α sin β to calculate cos 120 degree. The answer is -1.
1 day ago · Learn how to find the value of cos 120 degree using trigonometry ratios, quadrant rules, and related angles. See diagrams, examples, and formulas for sin, cos, and tan of different angles.
- The value of cos 120 is minus half which can be written as -1/2 or -0.5. there are two ways through which the value of cos 120 can be calculated, t...
- The study notes on the topic value of course 120 are easily available on Vedantu’s website; these notes have been curated carefully by Vedantu’s te...
- Vedantu’s article on cost 120° is mainly about the ways in which the value of course 120° can be calculated and it explains in-depth the various fu...
- The four quadrants of a triangle are as follows-First Quadrant: All the angles between 0⁰ and 90⁰ lie in the first quadrant. The value of all the f...
- The three basic functions of trigonometry are sin, cos, tan. These functions are explained in-depth in the study notes provided by Vedantu, which h...
Jan 24, 2023 · The value of cos 120° is -1/2 or -0.5 as it lies in the 2nd quadrant where cosine is negative. The formula of cosine is, cos x = (adjacent side) / (hypotenuse). Here, the adjacent side is adjacent to angle x, and the hypotenuse is the triangle’s longest side.
Jun 29, 2024 · Example: how to use a cosine calculator. This cosine calculator is a twin tool to our sine calculator – add to them the tangent calculator, and you'll have a pack of the most popular trigonometric functions. Simply type the angle – in degrees or radians – and you'll find the cosine value instantly.
Exact Form: −1 2 - 1 2. Decimal Form: −0.5 - 0.5. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.
