Question

Find the value of x. Round to the nearest degree.

I believe I'm supposed to be using cosine like this x = cos * 7/9 but I do not know what to do after that step. Any help would be appreciated!

Answer 1

Here's the picture that goes with it.

Answer 2

you actually use sine because you have the opposite side (length 7) and the hypotenuse (length 9)

so,

sin(angle) = opposite/hypotenuse

sin(x) = 7/9

Answer 3

the goal is to isolate x

Answer 4

Oh okay, so it would be like sin^-1(7/9)?

Answer 5

correct or arcsin(7/9)

Answer 6

what is that approximately?

Answer 7

I got 51.1

Answer 8

I'm getting 51.0575587310187

Answer 9

so double check

Answer 10

I got that too but I'm supposed to round it.

Answer 11

i see, well they want you to round to the nearest degree (full degree)

Answer 12

So would that be just 51?

Answer 13

correct

Answer 14

Thank you so much for your help! :)

Answer 15

you're welcome