I could answer that for you in a snap if I knew the size of angle 'b'.
Without that information, no answer is possible.
Wait! There is an answer. Not a useful one, but an answer nonetheless.
The cosine of angle 'b' is the square root of [ 1 minus the square of the sine of angle 'b' ] .
You heard it here first.
Angle of B is cos^-1*(0.2536) = 75.309 degrees to three decimal places
The secant of an angle is the reciprocal of the cosine of the angle. So the secant is not defined whenever the cosine is zero That is, whenever the angle is a multiple of 180 degrees (or pi radians).
at a 45 degree angle, or pi/4
The cosine is ±1/sqrt(5) = ±0.4472 (approx).
In a specific angle for a right triangle the cosine ratio is the ratio between the lengths of the adjacent side (side touching the angle) and the hypotenuse (longest side).
Angle of B is cos^-1*(0.2536) = 75.309 degrees to three decimal places
Cosine cannot have this kind of high value, it ranges from -1 to +1
Fora right angle triangle: cosine angle = adjacent/hypotenuse
Let the sides be a, b and c and their opposite angles be A, B and C Using the cosine rule angle A = 75.5 degrees Using the cosine rule angle B = 57.9 degrees Angle C muct be 46.6 degrees because there are 180 degrees in a triangle Cosine Rule: cos A = (b2+c2-a2)/(2*b*c)
The cosine function is mathematical equation to determine the adjacent angle of a triangle. The cosine of an angle is the ratio of the length of the hypotenuse: so called because it is the sine of the co-angle.
In a right triangle, the cosine of an angle is defined as the ratio of the adjacent side of that angle to the hypotenuse.
Your question is kind of confusing, but if you're asking what the angle between two unit vectors A and B is, then the answer is: the inverse cosine of the dot products of A and B.
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.
It depends on the relationship of the sides to the angle. Assuming that neither side a or side b are the hypotenuse (longest side of the right triangle) and that side A is opposite the angle A and side b is closest (adjacent) to angle A then side a over side b will give the tangent of the angle A. If either side a or side b is the hypotenuse then when multiplied together their relationship to the angle A will give either the Sine or the Cosine of the angle A. Tangent = Opposite side / Adjacent side. Sine = Opposite / Hypotenuse. Cosine = Adjacent / Hypotenuse. A full explanation with diagram is at the related link below:
In a right angle triangle it is: cosine ratio = adjacent/hypotenuse
cosine(59 degrees) = 0.51504 (rounded)
Sine of the angle to its cosine.