cos 255 deg = - 0.2588 <-----[ Answer ]
cos(255) = cos(180+75) = -cos75 = -0.2588
Cos(255 deg) = -0.2588
Cosine 0 is 1
-1<cosine<1
Cosine is 0.5
The Y-Intercept of the cosine function is X = 0, Y = cosine(0) = 1.
The cosine of 0.57 degrees is 0.999951. The cosine of 0.57 radians is 0.841901
It is cosine*cosine*cosine.
Cosine 0 is 1
what is the cosine of 3.14 ?
Cosine of 1 degree is about 0.999848. Cosine of 1 radian is about 0.540302.
Tangent = sine/cosine provided that cosine is non-zero. When cosine is 0, then tangent is undefined.
The inverse of the cosine is the secant.
Reciprocal of Cosine is Secant
Cosine of -90 is 0.
Cosine is a trigonometrical function.
Cosine is 0.995
Cosine is 0.766
You mean, you have the cosine, and want the angle? That is called arc-cosine, often written as cos-1x. Your scientific calculator should have a "shift" key or something similar, which you press, followed by the cosine key. That will give you the inverse cosine or arc-cosine.