High accuracy sin-cos wave and frequency generators, and related systems and methods

High accuracy sin-cos wave and frequency generators, and related systems and methods. In non-limiting embodiments disclosed herein, the sin-cos wave generators can provide highly accurate sin-cos values for sin-cos wave generation with low hardware costs and small lookup table requirements. The embodiments disclosed herein may include a circuit to conduct an arithmetic approximation of a sin-cos curve based on a phase input. The circuit may be in communication with a point lookup table and a correction lookup table. The tables may receive the phase input and match the phase input to main sin-cos endpoints associated with the phase, and to a correction value for the phase. These values which are selected based on the phase input, may be communicated to a converter circuit where the arithmetic functions are applied to the values resulting in a sin-cos curve value.