# How do you use a calculator to evaluate #sin^-1 (-0.4)# in both radians and degree?

##### 1 Answer

Nov 29, 2016

The order in which the keys are to be pressed is as follows.

Assuming that the calculator is in the degree mode, press

[SHIFT]

[SIN]

[

[.]

[4]

[=]

Answer in degrees is displayed at the top as

[113.5781785]

To convert to radian units, continue as follows

[

[1]

8]

[0]

[X]

[SHIFT]

[EXP]

[=]

Answer in radian units is displayed in the top as

[1.982313173]

Note that [SHIFT] [EXP] gets the value of

In some calculators, this is directly available through [SHIFT] [