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What else can I help you with?
The law of cosine for angle are suited if are known?
In a right angle triangle if the lengths of the adjacent or the hypotenuse are known.
Which angle length does cosine give you?
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.
An angle with a measure of 180degrees is called a what angle?
An angle with 180 degrees is a straight line, so it's known as a straight angle.
How do you use sine cosine and tangent?
They are used to find the angle or side measurement of a right triangle. For example, if 2 sides of a right triangle have known values and an angle has a known measurement, you can find the third side by using sine, cosine or tangent.
How intensity changes with cosine an cosine square?
The intensity of a wave varies with the square of the cosine of the angle of incidence. This relationship is known as the cosine squared law. As the angle of incidence increases, the intensity of the wave decreases due to the spreading of energy over a larger area. It is an important concept in understanding how light behaves when interacting with surfaces.
What is the use of complement and supplement angle degrees minutes seconds used for?
There are two main uses. One is, in a complicated shape, to find the measure of an unknown angle using known values of other angles. The other is that trigonometric ratios are related to their supplement angles. Also, the sine of an angle is related to the cosine of of its complement.
What is it called when you Divide an angle into 2 equal angles?
Dividing an angle into two equal angles is called angle bisecting. The line or ray that does the dividing is known as the angle bisector. This bisector creates two angles that are each half the measure of the original angle.
An angle measure 180 is called?
Angles that are 180 degrees (θ = 180°) are known as straight angles. • Angles between 180 and 360 degrees (180°< θ < 360°) are called reflex angles.
Which type of angle has a measure of 90 degrees?
An angle of 90 degrees is known as a right angle.
What is given two sides and the included angle?
The cosine rule which is: a2 = b2+c2-2*b*c*cosine A This is used to find the third side of a triangle when the two other sides are known along with the angle between them. Used when the triangle is not a right angle.
What would be a situation in which the lengths of two sides of a right triangle are known but the measure of an angle is needed?
In a right triangle where the lengths of two sides are known, such as the lengths of one leg and the hypotenuse, you can use trigonometric ratios to find the measure of an angle. For example, if you know the lengths of the opposite side and the hypotenuse, you can use the sine function: (\sin(\theta) = \frac{\text{opposite}}{\text{hypotenuse}}). By taking the inverse sine (arcsin) of the ratio, you can calculate the angle (\theta). Similarly, you can use cosine or tangent depending on which sides you have.
How index of refraction measured?
The index of refraction of a material is typically measured using a device called a spectrometer, which can measure the angle at which light bends when passing through the material. By comparing this bending angle to the known angle of incidence, the index of refraction can be calculated using Snell's Law. Another method involves measuring the critical angle at which light is totally internally reflected within the material.
