Thread: Finding inverse sine, cosine and tangent without calculator.

Hi guys...I have a math test tomorrow and one of the sections involves finding inverse sine operations without using a calculator.

For example Sin-1(2)

Now I know how to find regular sine using the unit circle but how do you do inverse without a calculator?

Thanks to anyone who can help.

Consider this relationship



Do you know how this was solved?

Therefore

^Thank you...you just boosted my grade from an f to a passing grade.

On an unrelated note do you play guitar? Pickslides sounds like a guitar thing...you know picks and slides.

Originally Posted by goonodeath

On an unrelated note do you play guitar?

Yep, loves it.