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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.
- How to find the value of cos120 degree? Maths Q&A - BYJU'S
How to find the value of cos 120 °? Solution. Find the value...
- How to find the value of cos120 degree? Maths Q&A - BYJU'S
How to find the value of cos 120 °? Solution. Find the value of cos 120 °. We know that. cos α + β = cos α cos β - sin α sin β. Now by substituting the value of α = 90 ° and β = 30 ° in the trigonometric identity we get.
Learn how to find the value of cos 120 degrees using unit circle, trigonometric functions, and identities. The value of cos 120 degrees is -0.5, which lies in the second quadrant.
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 cosine function and other trigonometric functions.
- 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 · Learn how to find the value of cos 120 using trigonometric formulas and a right-angled triangle. See the trigonometrical table, identities and sample questions for cos 120 and other angles.
May 4, 2023 · Learn how to find the value of cos 120 in degree and radian using unit circle, trigonometric identities and trigonometric value chart. See the negative value of cos 120 in the second quadrant and its different forms in decimals, fractions and radians.
cos (120) cos ( 120) Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the second quadrant. −cos(60) - cos ( 60) The exact value of cos(60) cos ( 60) is 1 2 1 2. −1 2 - 1 2.
