Question

in the figure the measure of angle CAD is twice the measure of angle CAB what is the measure of angle CAB?

Answer 1

Given data:

CAD is twice the measure of angle CAB.

Let, angle CAB = x then

angle CAD = 2x

Now,

`\angle CAB+\angle CAD=180^(\circ)`
`\begin{gathered} x+2x=180 \\ 3x=180 \\ x=60^(\circ) \end{gathered}`

Thus, the correct option is (b)