Trigonometric Functions Wave Mathematics: Trigonometric functions by Gary Leo Welz, M.A./M.S. Reading Quiz Teach with this 1. The trigonometric functions can be traced back to: René Descartes Hipparchus Euclid Plato 2. In relation to a right triangle, the sine of angle A describes: The absolute size of the opposite side and hypotenuse. The ratio of the adjacent side over the hypotenuse. The absolute value of the angle measurement. The ratio of the length of the opposite side divided by the hypotenuse. 3. On the unit circle, the sine of angle A in the circle equals what value? The y-coordinate The x-coordinate The value of the angle The length of the hypotenuse 4. On the unit circle, the cosine of angle A in the circle equals what value? The y-coordinate The x-coordinate The value of the angle The length of the hypotenuse 5. In the formula y=ASin(k*x), which term represents the amplitude of the wave? y Sin A k 6. The wavelength of the unit wave (one for which k=1) equals: π k 1 2π 7. The numeric value for the period of a wave (T) is the same as the wavelength (λ). The only difference is: The sign of the value: period is positive and wavelength is negative. The units of the value: period has units of time, wavelength has units of distance. The magnitude of the value: wavelength is always 100 times that of period. The units of the value: period has units of distance, wavelength has units of time. Score Quiz
