DEVICE FOR CALCULATION OF TRIGONOMETRIC FUNCTIONS Russian patent published in 1996 - IPC

FIELD: instruments, trigonometric function generators. SUBSTANCE: device calculates trigonometric functions sin x, cos x, sec x, cosec x, tg x, ctg x using two outputs for direct and reverse functions. Domain of variable is restricted to 0≅ X≅ π/4.. Restriction of domain of variable results in increased precision of all function generators, which determines precision of functions in domain of variable from 0 to π/2.. Device uses trigonometric equations, for example, sine-cosine calculations are performed using sin x = cos(90 deg.-x), cos x = sin(90 deg.-x). Device has controlled amplitude detector, trigonometric function generator and switch. EFFECT: increased precision. 2 cl, 3 dwg