Question

Find the value of r.

Answer 1

what is angle R

Answer 2

it doesn't tell you

Answer 3

I know, but how would you find it out?

Answer 4

subtracting ?

Answer 5

the measures

Answer 6

from what

Answer 7

45 and 63

Answer 8

ok subtract those from what

Answer 9

from 180 and you get 72

Answer 10

good, so R = 72

Answer 11

yess

Answer 12

from here, you use the law of sines

sin(R)/r = sin(P)/p

sin(72)/r = sin(45)/22

now solve for r

Answer 13

do you cross multiply it?

Answer 14

correct

Answer 15

so,

22*sin(72) = r*sin(45)

then divide both sides by sin(45), and flip the equation, to get

r = (22*sin(72))/sin(45)

r = ??

Answer 16

29.58 !!! which is 29.59

Answer 17

good

Answer 18

thanks :)

Answer 19

you're welcome