Home » Sine » Sin 25°

# Sin 25°

Welcome to sin 25°, our post aboutthe sine of 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.

## Sin 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°:

sin25° = 0.42262
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 sin25° 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]

Besides sin25°, similar trigonometric calculations on our site include, but are not limited, to:

The identities of sine 25° are as follows:

sin25°
= cos (90°-25°) = cos 65°
= sin (180°-25°) = sin 155°

-sin25°
= cos (90°+25°) = cos 115°
= sin (180°+25°) = sin 205°

Note that sin25° is periodic: sin (25° + n × 360°) = sin 25 degrees, n$\hspace{5px} \in \hspace{5px} \mathbb{Z}$.

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° = sin25°.

In the next part of this article of this article we discuss the trigonometric significance of sin25°, and there you can also learn what the search calculations form in the sidebar is used for.

## What is sin 25°?

In a triangle which has one angle of 90 degrees, the sine of the angle of 25° is the ratio of the length of the opposite side o to the length of the hypotenuse h: sin 25° = o/h.

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°.

Bringing together the triangle definition and the unit circle definition of sine 25 degrees, o = y and h = r = 1. It follows that $y\hspace{5px} =\hspace{5px}\frac{opposite}{hypotenuse}\hspace{5px}=\hspace{5px}\sin 25^\circ$.

Note that you can locate many terms including the sine25° value using the search form. On mobile devices you can find it by scrolling down. Enter, for instance, value of sin25°.

Along the same lines, using the aforementioned form, can you look up terms such as sin 25° value, sin 25, sin25° 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.

But, if there is something else about sine 25° you would like to know, fill in the form on the bottom of this post, or send us an email with a subject line such as sine 25 degrees.

If our calculator and the information on sin25° have been helpful, please hit the sharing buttons to spread the word about our content, and don’t forget to bookmark us.

Or, even better, install absolutely free PWA app (see menu or sidebar)!

Thanks for visiting sin25 degrees.