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Calculate cos(240)° Determine quadrant: Since 180 240 270 degrees it is located in Quadrant III tan is positive. Determine angle type: 240 > 90°, so it is obtuse cos(240) = -1/2 Excel or Google Sheets formula: =COS(RADIANS(240))
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cos 240° = -0.5. cos 240 degrees = -0.5. The cos of 240 degrees is -0.5, the same as cos of 240 degrees in radians. To obtain 240 degrees in radian multiply 240° by π / 180° = 4/3 π. Cos 240degrees = cos (4/3 × π). Our results of cos240° have been rounded to five decimal places. If you want cosine 240° with higher accuracy, then use.
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60∘ is an angle of one of the standard triangles with. cos(60∘) = 1 2. 240∘ is in the 3rd quadrant so (either by CAST or noting that the "x-side" of the associate triangle is negative) cos(240∘) = − cos(60∘) cos(240∘) = − 1 2. Answer link. it equals (-1/2) because cos (60^@) = 1/2 The reference angle for 240^@ is 60^@ (since 240.
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Answer: cos (240°) = -0.5. cos (240°) is exactly: -1/2. Note: angle unit is set to degrees. Use our cos (x) calculator to find the cosine of 240 degrees - cos (240 °) - or the cosine of any angle in degrees and in radians.
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cos(240) Natural Language; Math Input; Extended Keyboard Examples Upload Random. Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history, geography, engineering, mathematics, linguistics, sports, finance, music…
if a cos theta= b cos (theta +120 )= c cos(theta+240 ) then find the value of 1/a+ 1/b + Maths
Trigonometry. Simplify cos (-240) cos (−240) cos ( - 240) 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)
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Explanation: For sin 240 degrees, the angle 240° lies between 180° and 270° (Third Quadrant ). Since sine function is negative in the third quadrant, thus sin 240° value = - (√3/2) or -0.8660254. . . Since the sine function is a periodic function, we can represent sin 240° as, sin 240 degrees = sin (240° + n × 360°), n ∈ Z.
73. cos 28^° + cos 65^° +cos 115^° + cos 240^° +cos 280^° +cos300^°
Trigonometry. Find the Value Using the Unit Circle cos (240 degrees ) cos (240°) cos ( 240 °) Find the value using the definition of cosine. cos(240°) = adjacent hypotenuse cos ( 240 °) = adjacent hypotenuse. Substitute the values into the definition. cos(240°) = −1 2 1 cos ( 240 °) = - 1 2 1. Divide −1 2 - 1 2 by 1 1.
SOLVED Sin 120^∘= cos240^∘=
We are given: x¨ +x= −cos(t), x(0) = 1, x˙(0)= 0 For the homogeneous part of the system, we can write: m2+1 = 0 m1,2 = ± i The general solution is thus given by: xh(t) =c1cost+c2sint. Using the trigonometric identity, cos2x = 2cos2x−1 = 1−2sin2x 2cos2x+2 =4cos2x We are looking for an angle that allows for the relationship sinx= cos.
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Cos 240 Degrees. Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. One important concept in trigonometry is the trigonometric ratios, which define the relationships between the angles of a triangle and the lengths of its sides.
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Find the Exact Value cos(240 degrees ) Step 1. 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 third quadrant. Step 2. The exact value of is . Step 3. The result can be shown in multiple forms.
Find the exact value of each expression. \cos \left(240^{\ Quizlet
Find the Exact Value cos(240) Step 1. 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 third quadrant. Step 2. The exact value of is . Step 3. The result can be shown in multiple forms.
Cos 240 Degrees Find Value of Cos 240 Degrees Cos 240°
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COS 240, Spring 2024: General Information. An introduction to mathematical topics relevant to computer science. Combinatorics, probability and graph theory will be covered in the context of computer science applications. The course will present a computer science approach to thinking and modeling. Students will be introduced to fundamental.
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For cos 240 degrees, the angle 240° lies between 180° and 270° (Third Quadrant ). Since cosine function is negative in the third quadrant, thus cos 240° value = - (1/2) or -0.5. ⇒ cos 240° = cos 600° = cos 960°, and so on. Note: Since, cosine is an even function, the value of cos (-240°) = cos (240°).