Question

Help finding theta. problem attached

Answer 1

you will need your calculator. what is cos theta in that problem?

Answer 2

isnt it sine theta? @hmyoo111

Answer 3

no, because you have your hypotenuse and adjacent leg's lengths.

Answer 4

Wouldnt I just divide 72 by 87 ? @hmyoo111

Answer 5

that would be cos theta

Answer 6

so cos theta= 72/87 right?

Answer 7

Yes...

Answer 8

72/87=0.827586 and so on.

Answer 9

so cos theta=0.827586

Answer 10

right. but how would i change that to a degree?

Answer 11

put it on degree first, on your calculator, and youll get a degree answer :)

Answer 12

but you still have to find theta. so put theta= inverse cos (0.827586)

Answer 13

what. okay so what exactly do i put in the calculator?

Answer 14

inverse cosine.

Answer 15

Okay I got 34 is that my answer?

Answer 16

yes it is! good job :)

Answer 17

And I need help with one more thing.. its very simple I think its A.. its just a matter of looking at it but I wanna be sure @hmyoo111

Answer 18

sorry! do you still need help with this one?

Answer 19

I guess. I chose B is that right? @hmyoo111

Answer 20

yep! it is.

Answer 21

okay thanks I appreciate your help :) @hmyoo111

Answer 22

youre welcome. :)