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Q: How do you find cosine of angle?

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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.

For a right angle triangle:- hypotenuse = adjacent/cosine or hypotenuse = opposite/sine

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.

In a right triangle, the cosine of an angle is defined as the ratio of the adjacent side of that angle to the hypotenuse.

cosine(59 degrees) = 0.51504 (rounded)

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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.

Fora right angle triangle: cosine angle = adjacent/hypotenuse

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

hypotenuse.

Find the cosine of 38 degrees and then find its reciprocal.

Cosine is 0.5

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.

In a right triangle, the cosine of an angle is defined as the ratio of the adjacent side of that angle to the hypotenuse.

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.

You need to use trigonometry cosine (angle) = length/diagonal diagonal = length/cos(angle)

Angle of B is cos^-1*(0.2536) = 75.309 degrees to three decimal places

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