Question

What equation should I use to solve this? triangle angles

Answer 1

@phi @pooja195

Answer 2

You should use a calculator

Answer 3

You use the idea (fact) that the sum of the 3 angles in a triangle always add up to 180 degrees

Answer 4

in other words, if you add them up (and use "x" for the unknown angle)
x+148+11 = 180

Answer 5

Phi how did Brainly brought Openstudy and Openstudy still have no helpers on and some schools already started?

Answer 6

Just don't make no since? -.-

Answer 7

sense*

Answer 8

Oh yes, that's right

x+148+11=180
x + 148 + 11- 11 = 180 - 11
x + 148 = 169
x + 148 - 148 = 169 - 148
x = 21

Answer 9

yes

Answer 10

Thanks!

Answer 11

you could also do
x+148+11=180
x+159= 180
x= 180-159

x=21