Question

So confused pls help me

Answer 1

`a=49`

Explanation:

The angle having value
`(a+49)\textdegree` is the exterior angle.

Exterior angle of a triangle is equal to the sum of the other two opposite angles.

Hence

`a+49=a+a\\\\a+49=2a\\\\2a=a+49\\\\2a-a=49\\\\a=49`