- North Fork Snoqualmie River (Wikipedia)
The North Fork, approximately 28 miles (45 km) long, originates at the outlet of small, rarely visited Lake Kanim, 47°39′41″N 121°28′58″W. Almost directly after exiting the lake it drops over Kanim Falls. The river then flows east before making a wide turn north. Just before its confluence with the Middle Fork the river flows through a canyon near Ernie’s Grove. There are several waterfalls within this canyon including Fantastic Falls.
- https://en.wikipedia.org/wiki/Euler%27s_formula
- Euler’s formula (Wikipedia)
Euler’s formula, named after Leonhard Euler, is a mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function. Euler’s formula states that, for any real number x, one has eix = cos x + i sin x, where e is the base of the natural logarithm, i is the imaginary unit, and cos and sin are the trigonometric functions cosine and sine respectively. This complex exponential function is sometimes denoted cis x (“cosine plus i sine”). The formula is still valid if x is a complex number, and is also called Euler’s formula in this more general case.
