At point , two adjacent angles are and . For rays and to lie on the same straight…

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

Problem

At point

A

, two adjacent angles are

\angle CAB = 4x - 10^\circ

and

\angle BAD = 2x + 40^\circ

. For rays

AC

and

AD

to lie on the same straight line, the value of

x

must be: (a) 30 (b) 25 (c) 20 (d) 35