Cos 140 degrees in radians is written as cos (140° × π/180°), i.e., cos (7π/9) or cos (2.443460. . .). In this article, we will discuss the methods to find the value of cos 140 degrees with examples.

Use our cos(x) calculator to find the cosine of 140 degrees - cos(140 °) - or the cosine of any angle in degrees and in radians.

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The cos of 140 degrees is -0.76604, the same as cos of 140 degrees in radians. To obtain 140 degrees in radian multiply 140° by $\pi$ / 180° = 7/9 $\pi$. Cos 140degrees = cos (7/9 × $\pi)$.

Calculate cos(140) cos is found using Adjacent/Hypotenuse. Determine quadrant: Since 90 140 180 degrees it is located in Quadrant II. sin is positive. Determine angle type: 140 > 90°, so it is obtuse. cos(140) = -0.76604444132428. Special Angle Values

The value of cos (140) is -0.76604…

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