Question

Tangent of angle = 2.5
What is the angle? And how do I get it?

Answer 1

take inverse tangent of 2.5

Answer 2

so angle = tan^-1(2.5)

Answer 3

Thanks. What's tan^-1? Is that (tan2.5)^-1?

Answer 4

or is it tan^(-1*82.5)

Answer 5

it's that notation for tan inverse it should look like that on your calculator a tan^-1

Answer 6

that negative one exponent throws a lot of people off, so just use the "arctan" notation

So you want to find arctan(2.5)

Answer 7

^ good thinking

Answer 8

the tan^-1 notation is a bit confusing - all it means is ' the angle whose tangent is 2.5'
the alternative is arctan which gives sounds like an angle

Answer 9

your calculator might not have the "arctan" button, so look for the \[\Large \tan^{-1}\] button

Answer 10

you also have arcsin and arccos

Answer 11

Thanks everyone!