专业数学软件通常采用更高级和精确的算法,并且在数值计算的精度处理上可能更完善,所以专业数学软件计算的结果可能相对更准确。不过,反余弦函数计算器的结果一般也是在合理的误差范围内。你可以多找几个可靠的计算工具进行验证,比如使用不同的在线计算器或者科学计算器来计算相同的数值。如果多个工具的结果相近,那么这些结果...
对于cos120度的三角函数值,我们可以利用三角函数的性质进行计算。以下是详细的解答: 中文解答: 我们知道,cos(180度 - α) = -cosα。因此,cos120度可以转化为cos(180度 - 60度),即-cos60度。 由于cos60度的值为1/2,所以cos120度的值为-1/2。 英文解答: We know that cos(180 degrees - α) = -...
Value of Cos 120 degree can be calculated using other trigonometric angles 90 degrees and 180 degrees. These cosine values can be gained from the trigonometric table.
Ans. The method to evaluate cosine 120 has been provided on this page.Q.4. What is the value of cos 150 degrees?Ans. Cos 15 equals -√3/2.Q.5. What is the value of Cos 90?Ans. The value of Cos 90 is 0. So that is all the information on cos 120 and we have reached the...
The value of sin, cos, and tan of some angles are equal to the values of sin, cos, and tan of other angles. Let us take an example of cos(-30⁰). Since 30 degrees lie in the first quadrant we can say that cos(-30⁰) is equal to cos(30⁰) because all the angles in ...
Degrees First result Second result Radians First result Second result k = ...,-2,-1,0,1,2,...Arccos calculator ►Cosine tablex (deg) x (rad)cos x 180° π -1 150° 5π/6 -√3/2 135° 3π/4 -√2/2 120° 2π/3 -1/2 90° π/2 0 60° π/3 1/2 45°...
Cosine calculator to easily calculate the cosine function of any number. ➤ Calculate cos(x) with our trigonometric calculator. Cos calculator with degrees and radians to express the angle.
Answer to: Write the following complex number in rectangular form. 14(cos 120 degrees + i sin 120 degrees) By signing up, you'll get thousands of...
Angle (degrees)Angle (radians)Cosine 0°01 15°π/12√6 + √2/4 30°π/6√3/2 45°π/4√2/2 60°π/31/2 75°5π/12√6 –√2/4 90°π/20 105°7π/12–√6 –√2/4 120°2π/3–1/2 135°3π/4–√2/2 150°5π/6–√3/2 ...
What is cos(20 degrees)?Basic Trigonometric FunctionIn trigonometry, the basic trigonometric functions namely sine (sin), cosine (cos), and tangent (tan) relate an angle of a right triangle to the ratios of the two given side lengths. These three (3) basic trigonometric functions have their...