Question

k = ?

Answer 1

I need to go but can u wait for me in here

Answer 2

ill be back, i gotta go too

Answer 3

Hi Hikari - this looks quite tricky at first, but can you see how to calculate the angle marked in red? Hint: exterior angle of the smaller right angled triangle equals the angle marked in red plus 90 degrees.

Answer 4

hey dumbcow, can you explain guyc hint about the exterior angle?

Answer 5

I'm back

Answer 6

ok back,
this is a 30-60-90 right triangle
so the upper angle is 60
have you learned sin and cos functions ??

Answer 7

no

Answer 8

wait never mind,
a 30-60-90 triangle is a special triangle with ratio 1:sqrt(3):2
for our triangle 9:9sqrt(3):18
therefore
k + 3sqrt(3) = 9sqrt(3)
k = 6sqrt(3)

Answer 9

so702=6sq3

Answer 10

k = 6sq(3)
what is 702?

Answer 11

idk why

Answer 12

i got k + 27=729

Answer 13

how?

Answer 14

3 time 3 time 3=27
9X9X9=729

Answer 15

a 30-60-90 triangle is a special triangle with ratio 1:sqrt(3):2
for our triangle 9:9sqrt(3):18
therefore
k + 3sqrt(3) = 9sqrt(3)
k = 6sqrt(3)

sqrt = square root
why are you multiplying 3*3*3 and 9*9*9

Answer 16

i am sorry that i got myself confuse

Answer 17

thats alright its hard to explain without drawing it out

Answer 18

yea

Answer 19

1:sqrt(3):2
means vertical side length is 1
bottom side length is sqrt(3)
hypotenuse or diagonal side is 2

because for our triangle the vertical side is 9
9 is our scale factor
multiply everything by 9
9:9sq3:18
bottom side is 9sq3
diagonal is 18

Answer 20

i am confuse now

Answer 21

sorry
answer is k = 6sqrt(3)
i'll try to scan in a picture later

Answer 22

that's aok can help me with other questions

Answer 23

http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4dc9ea9d40ec8b0bc8610e17

Answer 24

i saw it already and i got it