For the inverse trigonometric feature of cosine 1/2 we commonly employ the abbreviation arccos and create it as arccos 1/2 or arccos(1/2).

You are watching: Arccos(-1/2)

If you have actually been searching for what is arccos 1/2, either in degrees or radians, or if you have been wondering around the inverse of cos 1/2, then you are appropriate below, too.

In this short article you deserve to uncover the angle arccosine of 1/2, together with identities.

Read on to learn all about the arccos of 1/2.

Arccos of 1/2

If you want to understand what is arccos 1/2 in regards to trigonomeattempt, inspect out the explacountries in the last paragraph; ahead in this section is the worth of arccosine(1/2):

arccos 1/2 = π/3 rad = 60°arccosine 1/2 = π/3 rad = 60 °arccosine of 1/2 = π/3 radians = 60 degrees" onclick="if (!window.__cfRLUnblockHandlers) return false; rerevolve fbs_click()" target="_blank" rel="nofollow noopener noreferrer" data-cf-modified-a399ba71b4a4b434aac6e70f-="">Share on Facebook

The arccos of 1/2 is π/3 radians, and the worth in levels is 60°. To readjust the result from the unit radian to the unit level multiply the angle by 180° / $pi$ and achieve 60°.

Our results above contain fractions of π for the results in radian, and also are specific worths otherwise. If you compute arccos(1/2), and any type of various other angle, using the calculator below, then the worth will be rounded to ten decimal places.

To achieve the angle in levels insert 1/2 as decimal in the area labelled “x”. However, if you desire to be provided the angle nearby to 1/2 in radians, then you need to push the swap systems button.

Calculate arccos x

A Really Cool Arccosine Calculator and Useful Information! Please ReTweet. Click To TweetA Really Cool Arccosine Calculator and Useful Information! Please ReTweet. Click To TweetApart from the inverse of cos 1/2, equivalent trigonometric calculations include:

The identities of arccosine 1/2 are as follows: arccos(1/2) =

$fracpi2$ – arcsin(1/2) ⇔ 90°- arcsin(1/2) $pi$ – arccos(-1/2) ⇔ 180° – arcos(-1/2) arcsec(1/1/2) $arcsin(sqrt1-(1/2)^2)$ $2arctan(fracsqrt1-(1/2)^21+(1/2))$

The infinite series of arccos 1/2 is: $fracpi2$ – $sum_n=0^infty frac(2n)!2^2n(n!)^2(2n+1)(1/2)^2n+1$.

Next, we comment on the derivative of arccos x for x = 1/2. In the complying with paragraph you deserve to further learn what the search calculations create in the sidebar is provided for.

Derivative of arccos 1/2

The derivative of arccos 1/2 is specifically advantageous to calculate the inverse cosine 1/2 as an integral.

The formula for x is (arccos x)’ = – $frac1sqrt1-x^2$, x ≠ -1,1, so for x = 1/2 the derivative equates to -1.1547005384.

Using the arccos 1/2 derivative, we can calculate the angle as a definite integral:

arccos 1/2 = $int_1/2^1frac1sqrt1-z^2dz$.

The partnership of arccos of 1/2 and the trigonometric attributes sin, cos and tan is:

sin(arccosine(1/2)) =$sqrt1-(1/2)^2$ cos(arccosine(1/2)) = 1/2 tan(arccosine(1/2)) = $fracsqrt1-(1/2)^21/2$

Keep in mind that you have the right to situate many kind of terms consisting of the arccosine(1/2) value using the search form. On mobile gadgets you can find it by scrolling dvery own. Get in, for instance, arccos1/2 angle.

Using the abovementioned develop in the exact same way, you have the right to additionally look up terms consisting of derivative of inverse cosine 1/2, inverse cosine 1/2, and also derivative of arccos 1/2, just to name a couple of.

In the next component of this post we talk about the trigonometric significance of arccosine 1/2, and tbelow we also define the difference between the inverse and the reciprocal of cos 1/2.

What is arccos 1/2?

In a triangle which has actually one angle of 90 degrees, the cosine of the angle α is the proportion of the size of the surrounding side a to the size of the hypotenuse h: cos α = a/h.

In a circle with the radius r, the horizontal axis x, and also the vertical axis y, α is the angle created by the two sides x and r; r relocating counterclockwise specifies the positive angle.

As follows from the unit-circle meaning on our homepage, assumed r = 1, in the interarea of the suggest (x,y) and the circle, x = cos α = 1/2 / r = 1/2. The angle whose cosine value equates to 1/2 is α.

In the interval <0, π> or <0°, 180°>, tright here is only one α whose arccosine worth equals 1/2. For that interval we define the feature which determines the worth of α as y = arccos(1/2)." onclick="if (!home window.__cfRLUnblockHandlers) rerevolve false; rerotate fbs_click()" target="_blank" rel="nofollow noopener noreferrer" data-cf-modified-a399ba71b4a4b434aac6e70f-="">Share on Facebook

From the interpretation of arccos(1/2) follows that the inverse attribute y-1 = cos(y) = 1/2. Observe that the reciprocal feature of cos(y),(cos(y))-1 is 1/cos(y).

Avoid misconceptions and also remember (cos(y))-1 = 1/cos(y) ≠ cos-1(y) = arccos(1/2). And make sure to understand also that the trigonometric function y=arccos(x) is identified on a minimal domajor, wright here it evaluates to a solitary worth just, referred to as the primary value:

In order to be injective, additionally well-known as one-to-one function, y = arccos(x) if and just if cos y = x and 0 ≤ y ≤ π. The domajor of x is −1 ≤ x ≤ 1.


The generally asked inquiries in the conmessage encompass what is arccos 1/2 degrees and what is the inverse cosine 1/2 for example; analysis our content they are no-brainers.

But, if tright here is something else about the topic you would certainly prefer to recognize, fill in the form on the bottom of this article, or send us an e-mail with a topic line such as arccosine 1/2 in radians.

See more: In This Theory Of Muscle Growth, Muscle Fibers Are Able To Split And Create New Fibers.

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