Table of Contents
Welcome to sin -25°, our post aboutthe sin minus 25 degrees.
For the sine of -25 degrees we use the abbreviation sin for the trigonometric function together with the degree symbol °, and write it as sin -25°.
If you have been looking for what is sin -25°, or if you have been wondering about sin -25 degrees in radians, then you are right here, too.
In this post you can find the sin -25° value, along with identities.
Read on to learn all about the sin of -25°.
Sin Minus 25 Degrees
If you want to know what is sin -25 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 -25°:
sin -25° = -0.42262
sin -25 degrees = -0.42262
The sin of -25 degrees is -0.42262, the same as sin of -25 degrees in radians. To obtain -25 degrees in radian multiply -25° by $\pi$ / 180° = -5/36 $\pi$. Sin -25degrees = sin (-5/36 × $\pi)$.
Our results of sin-25° have been rounded to five decimal places. If you want sine -25° with higher accuracy, then use the calculator below; our tool displays ten decimal places.
To calculate sin -25 degrees insert the angle -25 in the field labelled °, but if you want to calculate sin -25 in radians, then you have to press the swap unit button first.
Calculate sin [degrees]
The identities of sine -25° are as follows:
= cos (90° + 25°) = cos 115°
= sin (180° + 25°) = sin 205°
-sin-25°
= cos (90° – 25°) = cos 65°
= sin (180° – 25°) = sin 155°
There are more formulas for the double angle (2 × -25°), half angle ((-25/2)°) as well as the sum, difference and products of two angles such as -25° and β.
You can locate all of them in the respective article found in the header menu. To find everything about sin 25° click the link. And here is all about cos -25°, including, for instance, a converter.
In terms of the other five trigonometric functions, sin of -25° =
- $\pm \sqrt{1-\cos^{2} (-25^\circ)}$
- $\pm\frac{\tan (-25^\circ)}{\sqrt{1 + \tan^{2} (-25^\circ)}}$
- $\pm\frac{1}{\sqrt{1 + \cot^{2} (-25^\circ)}}$
- $\pm\frac{\sqrt{\sec^{2} (-25^\circ) – 1} }{\sec (-25^\circ)}$
- $\frac{1}{\csc (-25^\circ)}$
As the cosecant function is the reciprocal of the sine function, 1 / csc -25° = sin-25°.
In the next part of this article of this article we discuss the trigonometric significance of sin minus 25°, and there you can also learn what the search calculations form in the sidebar is used for.
What is sin -25°?
In a circle with the radius r, the horizontal axis x, and the vertical axis y, -25 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 -25°.
Note that you can locate many terms including the sine-25° value using the search form. On mobile devices you can find it by scrolling down. Enter, for instance, value of sin-25°.
Along the same lines, using the aforementioned form, can you look up terms such as sin -25° value, sin -25, sin-25° value and what is the sin of -25 degrees, just to name a few.
Given the periodic property of sine of -25°, to determine the sine of an angle < -360°, e.g. -745°, calculate sin -745° as sin (-745 Mod 360)° = sine of -25°, or look it up with our form.
Conclusion
The frequently asked questions in the context include what is sin -25 degrees and what is the sin of -25 degrees for example; reading our content they are no-brainers.
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– Article written by Mark, last updated on February 23rd, 2017