The trigonometric functions can be traced back to:
In relation to a right triangle, the sine of angle A describes:
On the unit circle, the sine of angle A in the circle equals what value?
On the unit circle, the cosine of angle A in the circle equals what value?
In the formula y=ASin(k*x), which term represents the amplitude of the wave?
The wavelength of the unit wave (one for which k=1) equals:
The numeric value for the period of a wave (T) is the same as the wavelength (λ). The only difference is: