Opposite side / hypotenuse = Sine = Bhujajya and Bhuja Chapa is the arc sine of the angle. Chapa means bow. We have already said that in the First Reduction to the Ecliptic, equation used R e Sin x, where e is eccentricity of the planet , earth = .016. Eccentricity, Chyuti is calculated as the planet’s orbit is an ellipse, eccentricity being 0-1 at ellipse, 0 at circle and 1 at parabola !