Two angles are and

MATHEMATICS · Single correct · CBSE · Mathematics · Lines and Angles · Lines and Angles

Problem

Two angles are

(4y - 9)^{\circ}

and

(5y + 9)^{\circ}

. They are supplementary. What is the measure of the smaller angle? (a)

79^{\circ}

(b)

89^{\circ}

(c)

71^{\circ}

(d)

63^{\circ}