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Welcome to cot 99°, our post aboutthe cotangent of 99 degrees.
For the cotangent of 99 degrees we use the abbreviation cot for the trigonometric function together with the degree symbol °, and write it as cot 99°.
If you have been looking for what is cot 99°, or if you have been wondering about cot 99 degrees in radians, then you are right here, too.
In this post you can find the cot 99° value, along with identities.
Read on to learn all about the cot of 99°.
Cot 99 Degrees
If you want to know what is cot 99 degrees in terms of trigonometry, then navigate straight to the explanations in the next paragraph; what’s ahead in this section is the value of cot 99°:
cot 99° = -0.15838
cot 99 degrees = -0.15838
The cot of 99 degrees is -0.15838, the same as cot of 99 degrees in radians. To obtain 99 degrees in radian multiply 99° by $\pi$ / 180° = 11/20 $\pi$. Cot 99degrees = cot (11/20 × $\pi)$.
Our results of cot99° have been rounded to five decimal places. If you want cotangent 99° with higher accuracy, then use the calculator below; our tool displays ten decimal places.
To calculate cot 99 degrees insert the angle 99 in the field labelled °, but if you want to calculate cot 99 in radians, then you have to press the swap unit button first.
Calculate cot [degrees]
The identities of cotangent 99° are as follows:
= tan (90°-99°) = tan -9°
-cot99°
= cot (-99°) = -cot 99°
= tan (90°+99°) = tan 189°
= cot (180°-99°) = cot 81°
There are more formulas for the double angle (2 × 99°), half angle ((99/2)°) as well as the sum, difference and products of two angles such as 99° and β.
You can locate all of them in the respective article found in the header menu. To find everything about cot -99° click the link. And here is all about tan 99°, including, for instance, a converter.
In terms of the other five trigonometric functions, cot of 99° =
- $\pm\frac{\sqrt{1 – \sin^{2} 99^\circ}}{\sin 99^\circ}$
- $\pm\frac{\cos 99^\circ}{\sqrt{1 – \cos^{2} 99^\circ}}$
- $\pm \sqrt{\csc^{2} 99^\circ -1}$
- $\pm\frac{1}{\sqrt{\csc^2 99^\circ – 1}}$
- $\frac{1}{\tan 99^\circ}$
As the tangent function is the reciprocal of the cotangent function, 1 / tan 99° = cot99°.
In the next part of this article we discuss the trigonometric significance of cot99°, and there you can also learn what the search calculations form in the sidebar is used for.
What is cot 99°?
In a circle with the radius r, the horizontal axis x, and the vertical axis y, 99 degrees is the angle formed by the two sides x and r; r moving counterclockwise is the positive angle.
Applying the unit-circle definition found on our homepage, assumed r = 1, in the intersection of the point (x,y) and the circle, y = sin 99°, x = cos 99° and cot 99° = cos 99°/sin 99°.
Note that you can locate many terms including the cotangent99° value using the search form. On mobile devices you can find it by scrolling down. Enter, for instance, value of cot99°.
Along the same lines, using the aforementioned form, can you look up terms such as cot 99° value, cot 99, cot99° value and what is the cot of 99 degrees, just to name a few.
Given the periodicity of cotangent of 99°, to determine the cotangent of an angle > 180°, e.g. 819°, calculate cot 819° as cot (819 Mod 180)° = cotangent of 99°, or use our form.
Conclusion
The frequently asked questions in the context include what is cot 99 degrees and what is the cot of 99 degrees for example; reading our content they are no-brainers.
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– Article written by Mark, last updated on February 19th, 2017