Question

Somone please tell me how to solve this?

Answer 1

?=84

Explanation:

From the diagram;

`x+120\degree=180\degree`

`x=180\degree-120\degree`

`x=60\degree`

Also the interior angles of a triangle adds up to 180 degree.

x+y+90=180

60+y+90=180

y==180-150

y=30

Also, we use angles on a straight line to get;

z+114=180

z=180-114

z=66

Again using sum of interior angles of a triangle, we get;

z+y+?=180

66+30+?=180

96+?=180

?=180-96

?=84