OpenStudy (anonymous):

How to do #54? Look at the picture below.

4 years ago
OpenStudy (anonymous):
4 years ago

OpenStudy (anonymous):

Could you show me example 7 please?

4 years ago
OpenStudy (anonymous):

@x3pufflix3

4 years ago
OpenStudy (anonymous):

Do you know the answer to this? Im not sure if my answer is right

4 years ago
OpenStudy (anonymous):

I don't know the answer.

4 years ago
OpenStudy (anonymous):

@ybarrap. Do you know how to do this?

4 years ago
OpenStudy (ybarrap):

$$ u=\arcsin{\cfrac{x-h}{r}}\\ \sin u=\sin\left ({\arcsin{\cfrac{x-h}{r}}}\right )=\cfrac{x-h}{r}\\ $$ As shown in the sketch below: |dw:1382903285864:dw| Therefore, $$ \cos u = \cfrac{\sqrt{r^2-(x-h)^2}}{r} $$

4 years ago
OpenStudy (anonymous):

Is u just a variable you used?

4 years ago
OpenStudy (anonymous):

@ybarrap

4 years ago
OpenStudy (ybarrap):

yes, just a dummy variable

4 years ago
OpenStudy (anonymous):

Oh alright, thanks alot man!

4 years ago
OpenStudy (ybarrap):

yw

4 years ago