Central angle intersection points and of the legs of the angle with the circle form a diameter, then is a straight angle. (In radians, .) Let be the minor arc of the circle between points and , and let be the radius of the circle. If the central angle is subtended by , then If the central angle is not subtended by the minor arc , then is a reflex angle and If a tangent at and a tangent at intersect at the exterior point , then denoting the center as , the angles (convex) and are supplementary (sum to 180°). A
Mathematics education in New York than Algebra II in the 11th grade. In Math A, students learn to how write, solve, and graph equations and inequalities. They will also learn how to solve systems of equations, quadratics, as well as exponents, exponential functions, polynomials, radicals, and rational expressions. Other topics included are probability and statistics. Geometric concepts such as right triangles are also introduced. The course works in conjunction with New York State's Standards for Mathematics. One course lasted three semesters, after which students took the Regents Math A Examination. Math A/B took the place of the former "Course 2" curriculum, which focused almost solely