Question

Find the value of a in this picture below

Answer 1

Explanation:

in the given figure;

a+60deg.+a+a=180 deg.

=> 3a+60=180

=> 3a=180-60

=> 3a=120

=> a=120/3

=40 deg.

Answer 2

`\boxed{a=40}`

Explanation:

Angles on a straight line add up to 180 degrees.

`a` is equivalent to all the other
`a`.

Put up an equation and solve for
`a`.

`60+a+a+a=180`

`3a+60=180`

`3a=120`

`a=40`