Question

i'm having difficulty entering my math into the ti 83 calculator? how would I enter tan-1(37) ? if necessary, it says we can use 3.1416 so I know that i'm missing something

Answer 1

type 2nd then the "tan" key to get the arctangent function

Answer 2

I entered 2nd, then "tan", then "3", then 7, then enter and got 1.5437 and it was wrong. any suggestions as to where i went wrong?

Answer 3

are you working with degrees or radians?

Answer 4

it looks like you're in radian mode

Answer 5

but you really want to be in degrees

Answer 6

radians. what reason would he put 3.1416 as a means to figure this out?

Answer 7

that's a close approximation to pi, my guess is that you're going to estimate 37 somehow

Answer 8

do you think he listed the approx pi, to give us a tip to use degrees? maybe. we are suppose to round it to 2 decimals places

Answer 9

probably most likely so that you can convert to and from degrees and radians

Answer 10

since the conversion formulas are

degrees = (radians*180)/pi


radians = (degrees*pi)/180

Answer 11

so in degree mode it ought to be 88.45 ?

Answer 12

yep

Answer 13

thank you

Answer 14

yw