CommandsfresnelCosOn this pagefresnelCos fresnelCos (x) The fresnelCos function returns the Fresnel cosine function C (x ). C(x)=∫0xcos(π2t2)dt.\displaystyle C(x)=\int_{0}^{x} \cos \left(\frac{\pi}{2} t^{2}\right) d t .C(x)=∫0xcos(2πt2)dt. See Also fresnelSin, fresnelCS References Abramowitz, M., and I.A. Stegun, "Handbook of Mathematical Functions", 446 pp., Dover, New York, 1972.