Question

Can anyone explain to me How to Use a Calculator for Trigonometry?
For example tan^-1 (5/2) (answer: 1.19 rad)

Thanks!

Answer 1

Make certain that your calculator is set in radian more and not degrees.
The enter 5/2 and push the inverse tangent button. (second function, tangent)

Answer 2

Thanks for your help!
But how come I got the wrong answer? I got -0.747022297239.

Answer 3

Because you used the tangent button and not the inverse tangent button.

Answer 4

thanks !!

Answer 5

yw