Cos 30 Degrees In trigonometry, the cosine function is defined as the ratio of the adjacent side to the hypotenuse If the angle of a right triangle is equal to 30 degrees, and then the value of cosine at this angle ie, the value of Cos 30 degree is in a fraction form as √3/2
Cos 3/2 in degrees-∴ cos 30° = cos() = √3/2 or Explanation For cos 30 degrees, the angle 30° lies between 0° and 90° (First Quadrant) Since cosine function is positive in the first quadrant, thus cos 30° value = √3/2 or Since the cosine function is a periodic function, we can represent cos 30° as, cos 30 degrees = cos(30° n × 360°), n ∈ ZCalculate cos(140)° Determine quadrant Since our angle is greater than 90 and less than or equal to 180 degrees, it is located in Quadrant II In the second quadrant, the values for sin are positive only Determine angle type 2√ 3 /3 2 √ 3 /3 315° 7π/4√
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Using formula, Cos (ab) = Cos a Cos b – Sin a Sin b So, Cos 135° = Cos 90° Cos 45° – Sin 90° Sin 45° cos 135° = 0 x 1/√2 – 1 x 1/√2 cos 135° = – 1/√2 Now, we have reached the end of this article on Cos 90 and we hope the information provided here was helpfulSince our angle is greater than 270 and less than or equal to 360 degrees, it is located in Quadrant IV In the fourth quadrant, the values for cos are positive only Determine angle type 330 is an obtuse angle since it is greater than 90° cos (330) = √ 3 /2 In Microsoft Excel or Google Sheets, you write this function as =COS (RADIANS (330))
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