Solving Right Triangles definitions Flashcards
Solving Right Triangles definitions
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Right Triangle A polygon with one 90-degree angle and two acute angles, often used to apply trigonometric relationships. Hypotenuse The longest side in a right triangle, always opposite the right angle and essential for trigonometric ratios. SOHCAHTOA A mnemonic device summarizing how sine, cosine, and tangent relate to side ratios in right triangles. Sine A trigonometric function representing the ratio of the side opposite an angle to the hypotenuse in a right triangle. Cosine A trigonometric function representing the ratio of the adjacent side to the hypotenuse in a right triangle. Tangent A trigonometric function representing the ratio of the side opposite an angle to the adjacent side in a right triangle. Pythagorean Theorem A formula stating that the sum of the squares of the two shorter sides equals the square of the hypotenuse. Complementary Angles Two angles whose measures add up to 90 degrees, a property of the non-right angles in a right triangle. Inverse Function A mathematical operation used to determine an angle from a known trigonometric ratio. Degree Mode A calculator setting ensuring trigonometric calculations are interpreted in degrees rather than radians. Adjacent Side The side next to a given angle in a right triangle, but not the hypotenuse. Opposite Side The side across from a given angle in a right triangle, used in trigonometric ratios. Reference Angle The specific angle in a right triangle used as the basis for defining side relationships. Trigonometric Equation An equation involving a trigonometric function set up to relate angles and side lengths in a triangle. Special Right Triangle A right triangle with angles or side ratios that allow for quick solutions without general trigonometric methods.
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