Question

find x..
1: 9
2: 3
3: 4.5
4: 4.5/3

Answer 1

this is a 30-60-90 triangle the definition of which is

Answer 2

See?

Answer 3

@annie_r_u_otay, Understand?

Answer 4

can you explain?

Answer 5

OK! can you find the unknown angle for me?
(on the left)

Answer 6

Sum of the angles in a triangle is =180

Answer 7

well 60+90=30

Answer 8

what?! NOOOO!

Answer 9

i mean 150 and then 180-150=30

Answer 10

150, where do you get that?

Answer 11

60+90

Answer 12

you know 2 angles, 90 deg and 60 deg, right?

Answer 13

YEP!

Answer 14

okay haha now what?

Answer 15

So to find the remaining angle what would you do?

Answer 16

you take away 150 from 180? correct or no?

Answer 17

yep!

Answer 18

so then what?(:

Answer 19

I didn't know u understood that, my bad.... anyway....

Answer 20

Do you know what 45-45-90 and 30-60-90 triangles are?

Answer 21

not a clue.. but i think maybe they are special or sommething right?

Answer 22

This is the rule!


30-60-90 triangle is just a triangle that has angles with degree measures of 30, 60 and 90.