If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. In a circle, the major arc is 3 times the minor arc. The corresponding central angles and the degree measures of two arcs are
270° and 90° We are given the major arc is 3 times the minor arc. We are asked to find the corresponding central angle. See the corresponding figure.
We know that angle formed by the circumference at the centre is 360°. Since the circumference of the circle is divided into two parts such that the angle formed by major and minor arcs at the centre are 3x and x respectively. So 3x + x = 360 4x = 360 x = 90 So m \[\stackrel\frown{AB}\] = 90° and m \[\stackrel\frown{AB}\] = 3x = 270° Concept: Angle Subtended by an Arc of a Circle Is there an error in this question or solution? |