With Gordon, this function names a partial differential equation with soliton solutions. Euler solved the Basel problem using its series expansion, which only has odd powers. For small angles, this function can be approximate
With Gordon, this function names a partial differential equation with soliton solutions. Euler solved the Basel problem using its series expansion, which only has odd powers. For small angles, this function can be approximated by y = x. Its namesake law equates the ratios between this function of an angle and the length of the opposite side in a triangle. This function is positive in the first and second quadrants, and corresponds to the y-coordinate on a unit circle. This reciprocal of cosecant is defined in a right triangle as "opposite over hypotenuse." For 10 points, name this trigonometric function often paired with cosine.
With Gordon, this function names a partial differential equation with soliton solutions.
sine [accept sine of x, sine of theta, etc.] 