Question

find the value of coses126 degree​

Answer 1

Answer:

$cosec(126) \\ = cosec(90 \times 1 + 36) \\ = sec36 \\ = \frac{1}{cos36} \\ = \frac{1}{ \frac{ \sqrt{5} + 1 }{4} } \\ = \frac{4}{ \sqrt{5} + 1} \\ \frac{4}{ \sqrt{5} + 1} \times \frac{ \sqrt{5} - 1}{ \sqrt{5} - 1} \\ = \frac{4( \sqrt{5} - 1) }{5 - 1} \\ = \sqrt{5} - 1$

Answer 2

Answer:

cos126°

= sin (90°+126°) = sin 216°

= sin (90°-126°) = sin -36°

-cos126°

= cos (180°+126°) = cos 306°

= cos (180°-126°) = cos 54°

Note that cos126° is periodic: cos (126° + n × 360°) = cos 126 degrees, n.

There are more formulas for the double angle (2 × 126°), half angle ((126/2)°) as well as the sum, difference and products of two angles such as 126° and β.

You can locate all of them in the respective article found in the header menu. To find everything about cos -126° click the link. And here is all about sin 126°, including, for instance, a converter.

In terms of the other five trigonometric functions, cos of 126° =

 

 

 

 

As the cosine function is the reciprocal of the secant function, 1 / sec 126° = cos126°.

In the next part we discuss the trigonometric significance of cos126°, and there you can also learn what the search calculations form in the sidebar is used for.

What is cos 126°?

In a circle with the radius r, the horizontal axis x, and the vertical axis y, 126 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, x = cos 126°.

Note that you can locate many terms including the cosine126° value using the search form. On mobile devices you can find it by scrolling down. Enter, for instance, value of cos126°.

Along the same lines, using the aforementioned form, can you look up terms such as cos 126° value, cos 126, cos126° value and what is the cos of 126 degrees, just to name a few.

Given the periodic property of cosine of 126°, to determine the cosine of an angle > 360°, e.g. 846°, calculate cos 846° as cos (846 Mod 360)° = cosine of 126°, or look it up with our form.

Conclusion

The frequently asked questions in the context include what is cos 126 degrees and what is the cos of 126 degrees for example; reading our content they are no-brainers.

But, if there is something else about cosine 126° 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 cosine 126

Step-by-step explanation: