Question

what's sin(45) = 8/X

Answer 1

sin(45)=sqrt(2)/2
solve this for X:
\[\frac{\sqrt{2}}{2}=\frac{8}{X}\]

Answer 2

huh?

Answer 3

your question is to solve for X: sin(45)=8/X right?

Answer 4

correct

Answer 5

We know from the unit circle sin(45)=sqrt(2)/2

Answer 6

\[\frac{\sqrt{2}}{2}=\frac{8}{X}\]
so we can replace sin(45) with sqrt(2)/2

Answer 7

now we solve this for X

Answer 8

what is the answer out of these? a. 8sqrt 3 b. 8sqrt 2 c. 4 sqrt 2 d. 16 sqrt 2

Answer 9

you can cross multiplying

Answer 10

try it

Answer 11

OMG Thanks!

Answer 12

remember to rationalize any unrationalized denominators