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If its a right triangle, use SoH CaH Toah, or Sine = opposite over hypotenuse, Cosine = adjacent over hypotenuse, and tangent = opposite over the adjacent. So, to solve your problem, if "c" is the right angle, Tan(a) = bc/ca or Tan(30)=5/ca or .577 = 5/ca or (.577)*ca = 5 or ca=5/(.577) or ca= 8.66
Two things that are adjacent to each other are in contact with each other without overlapping. Examples are adjacent apartments, adjacent states, and adjacent sides of a polygon.The word adjacent as used in the definitions of the cosine and tangent trigonometric functions can be a little confusing because, obviously, it takes two sides to make an angle in a polygon, so, technically, you could say that each angle is adjacent to two sides. When trig functions refer to the side adjacent to one of the acute angles in a right triangle, they are referring to the one that's not the hypotenuse, or, in other words, the one that is also adjacent to the right angle.
Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.
a hexagon could be adjacent only if it is regular an octagon is adjacent