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Home > CCG > Chapter 12 > Lesson 12.2.3 > Problem 12-93


Examine the diagrams below. For each one, use the geometric relationships to solve for the given variable.  

  1.  is tangent to at and . Find .
    A circle is drawn with a line tangent to the circle at point, P. A line C, P, is drawn from the center of the circle to, P. Another point to the right of, P, on the circle is, Q. A line C, Q, is extended outside of the circle to point, R, where it meets the tangent line. Q, R, is labeled, x. There is a triangle C, P R drawn. Another point on the circle to the left of, P, is point, M. The arc, P, M, Q measures 314 degrees.

  1. Radius = cm
    A circle is drawn with a chord, X. The smaller arc between the endpoints of chord, x, is 102 degrees.

    Draw out of the chord that has been given.

    The endpoints of chord, x, is labeled, A, and B.  From the center of the circle, C to A is 7 as well as from the center, C, to B. Triangle A, B,C is drawn.

    According to the Law of Cosines: