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5 Written questions

5 Multiple choice questions

  1. In a right triangle with legs a and b and hypotenuse c, a^2 + b^2 = c^2
  2. The angle formed when looking down from the horizontal
  3. trigonometric ratio: abbreviation sin; the sine of an acute angle in a right triangle equals the side opposite the angle divided by the hypotenuse (sin A = opp/hyp)
  4. Special right triangle: isosceles right triangle where the legs are congruent and the hypotenuse = leg * sqrt(2)
  5. The angle formed when looking up from the horizontal

5 True/False questions

  1. Acute triangleIn a triangle with shorter sides a and b and longer side c, if a^2 + b^2 > c^2, then the triangle is acute

          

  2. cosinetrigonometric ratio: abbreviation sin; the sine of an acute angle in a right triangle equals the side opposite the angle divided by the hypotenuse (sin A = opp/hyp)

          

  3. Inverse Trig RatioGives us the measure of the angle whose sin/cos/tan is a given ratio value. "Undoes" sin, cos, or tan. Written using a "-1" (looks like an exponent, but isn't). Also called "arc," such as arcsin, arccos, arctan. Example: arcsin(1/2) = 30 degrees. Useful in finding missing angle values in right triangles.

          

  4. Obtuse triangleIn a triangle with shorter sides a and b and longer side c, if a^2 + b^2 > c^2, then the triangle is acute

          

  5. Pythagorean TripleIn a right triangle with legs a and b and hypotenuse c, a^2 + b^2 = c^2