# How do you do inverse trig functions on the calculator for example #sinθ = 0.4#?

##### 1 Answer

Nov 29, 2015

It will depend upon your calculator. Look for one of the following: sin^(-1), arcsin, or asin.

#### Explanation:

Typically this would be a "2nd function" key,

so you would hit

- "2nd Function",
#sin^(-1)# (or whatever you have),- the value (in this case (0.4),
- then the "enter" or "=" key.

Digging through the drawers of my desk I found 4 old calculators; combining that with Excel that I often use as a calculator:

- two use

- two use

- one uses

To further confuse matters one of the ones that uses