Table of Contents
Welcome to sin -720°, our post aboutthe sin minus 720 degrees.
For the sine of -720 degrees we use the abbreviation sin for the trigonometric function together with the degree symbol °, and write it as sin -720°.
If you have been looking for what is sin -720°, or if you have been wondering about sin -720 degrees in radians, then you are right here, too.
In this post you can find the sin -720° value, along with identities.
Read on to learn all about the sin of -720°.
Sin Minus 720 Degrees
If you want to know what is sin -720 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 sin -720°:
sin -720° = 0
sin -720 degrees = 0
The sin of -720 degrees is 0, the same as sin of -720 degrees in radians. To obtain -720 degrees in radian multiply -720° by $\pi$ / 180° = -4/1 $\pi$. Sin -720degrees = sin (-4/1 × $\pi)$.
Our results of sin-720° have been rounded to five decimal places. If you want sine -720° with higher accuracy, then use the calculator below; our tool displays ten decimal places.
To calculate sin -720 degrees insert the angle -720 in the field labelled °, but if you want to calculate sin -720 in radians, then you have to press the swap unit button first.
Calculate sin [degrees]
The identities of sine -720° are as follows:
= cos (90° + 720°) = cos 810°
= sin (180° + 720°) = sin 900°
-sin-720°
= cos (90° – 720°) = cos -630°
= sin (180° – 720°) = sin -540°
There are more formulas for the double angle (2 × -720°), half angle ((-720/2)°) as well as the sum, difference and products of two angles such as -720° and β.
You can locate all of them in the respective article found in the header menu. To find everything about sin 720° click the link. And here is all about cos -720°, including, for instance, a converter.
In terms of the other five trigonometric functions, sin of -720° =
- $\pm \sqrt{1-\cos^{2} (-720^\circ)}$
- $\pm\frac{\tan (-720^\circ)}{\sqrt{1 + \tan^{2} (-720^\circ)}}$
- $\pm\frac{1}{\sqrt{1 + \cot^{2} (-720^\circ)}}$
- $\pm\frac{\sqrt{\sec^{2} (-720^\circ) – 1} }{\sec (-720^\circ)}$
- $\frac{1}{\csc (-720^\circ)}$
As the cosecant function is the reciprocal of the sine function, 1 / csc -720° = sin-720°.
In the next part of this article of this article we discuss the trigonometric significance of sin minus 720°, and there you can also learn what the search calculations form in the sidebar is used for.
What is sin -720°?
In a circle with the radius r, the horizontal axis x, and the vertical axis y, -720 degrees is the angle formed by the two sides x and r; r moving counterclockwise is the positive angle.
As detailed in the unit-circle definition on our homepage, assumed r = 1, in the intersection of the point (x,y) and the circle, y = sin -720°.
Note that you can locate many terms including the sine-720° value using the search form. On mobile devices you can find it by scrolling down. Enter, for instance, value of sin-720°.
Along the same lines, using the aforementioned form, can you look up terms such as sin -720° value, sin -720, sin-720° value and what is the sin of -720 degrees, just to name a few.
Given the periodic property of sine of -720°, to determine the sine of an angle < -360°, e.g. -1440°, calculate sin -1440° as sin (-1440 Mod 360)° = sine of -720°, or look it up with our form.
Conclusion
The frequently asked questions in the context include what is sin -720 degrees and what is the sin of -720 degrees for example; reading our content they are no-brainers.
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– Article written by Mark, last updated on February 23rd, 2017