Question

I dont know how to work the tan, cos or sin on my calculator.. can someone please explain to me how it works?!

Answer 1

Do you have a specific problem you're trying to solve?
What type of calculator do you have? :)

Answer 2

i have a TI-85. the problem is Find the missing value to the nearest hundredth.

cos ___ = 9/20
A.)26.74°
B.)80.63°
C.)63.26°
D.)24.23

Answer 3

type

2nd key, cos key, then type in "9/20)" without quotes and hit enter

make sure you're in degree mode

Answer 4

when you hit the 2nd key, then the cosine key, you are using the inverse cosine or arccosine function to find the missing angle

Answer 5

to see if you're in degrees mode press 'MODE'

Answer 6

Thanks!

Answer 7

yw