look 3 times left then 7times up and you will be at mt etna
Yes.
Sine= Opposite/ Hypotenuse Cosine= Adjacent/ Hypotenuse
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.
Sine = -0.5 Cosine = -0.866 Tangent = 0.577
Cosine(30) = sqrt(3)/2
Sides have lenght, angles do not. Cosine is the ratio of the adjacent side to the hypotenuse. Cosine can be used to find either of these sides if the other is known.
The sine, cosine and tangent are used to find the degrees of a right angle triangle.
For a right angle triangle:- hypotenuse = adjacent/cosine or hypotenuse = opposite/sine
The maximum of the sine and cosine functions is +1, and the minimum is -1.
It is cosine*cosine*cosine.
use the SohCahToa method
It has only magnitude and no direction. It depends on magnitude of two vectors which are multiplying and cosine of angle between them. A . B = AB (cosine of angle between them). Best example is 'work done by a force' = force . displacement = Fd(cosine of angle between force and displacement)