Question

cos __ = 7/17
a) 39 degrees
b) 30 degrees
c) 26.57 degrees
d) 60 degrees

Answer 1

Take the inverse cos..
\[\LARGE x=cos^{-1}~(\frac{7}{17})\]

Answer 2

\[\large \cos \theta = \frac{7}{17}\]
\[\large \theta = \cos^{-1}\frac{7}{17}\]

Answer 3

^Depends on what your variable was.

Answer 4

it's actually suppose to be cos __ = 7/14

Answer 5

same idea, just change 17 to 14 :)

Answer 6

It is

Answer 7

I got the answer 66.6 but its none of the options .

Answer 8

Are you doing the corrected 7/14 one?

I get something different

\[\large \theta = \cos^{-1} \frac{7}{14}\]

Answer 9

yeah , im putting it in too the calculator how you told me to do it , & that's the answering im getting.

Answer 10

so 7/14 is .5

\[\large \theta = \cos^{-1}(.5)\]
I get
\[\large \theta = 59.999\]

Answer 11

oh I was putting 7/14 in , I didn't know I had to make it a decimal first . so the answer would be D ?

Answer 12

Well yeah you had to do the division first...or at least make sure to put (7/14)

But yes D is your answer :)