Trigonometry Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Radians | the inverse function of the cosine; the angle that has a cosine equal to a given number.
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| Degrees | a specific identifiable position in a continuum or series.
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| Coterminal Angle | drawn in the standard position and have terminal sides in the same location.
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| Quadrantal Angle | Angles in the standard position where the terminal side lies on the x or y axis
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| Unit Circle | a radius of one, located centered at the origin.
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| Reference Angle | The smallest angle that the terminal side of a given angle makes with the x-axis.
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| Sine | the length of the opposite side divided by the length of the hypotenuse.
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| Cosine | the length of the adjacent side divided by the length of the hypotenuse.
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| Tangent | the opposite side over the adjacent side.
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| Cosecant | the length of the hypotenuse divided by the length of the opposite side.
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| Secant | the length of the hypotenuse divided by the length of the adjacent side.
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| Cotangent inverse | ratio of the adjacent to the opposite side of a right-angled triangle.
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| Arcsine | the inverse function of the sine; the angle that has a sine equal to a given number.
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| Arccos | the inverse of the cosine function.
It returns the angle whose cosine is a given number.
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| Arctan | the inverse of the tangent function.
It returns the angle whose tangent is a given number.
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| Law of sines | the ratio of each side of a plane triangle to the sine of the opposite angle is the same for all three sides and angles
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| Law of cosines | the square of a side of a plane triangle equals the sum of the squares of the remaining sides minus twice the product of those sides and the cosine of the angle between them
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Created by:
laquitta_2013
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