SOLUTION: Trigonometric functions are not that bad, but how would I solve one not on the unit circle? For example, {{{sin^-1 (1/3)}}}

Algebra ->  Trigonometry-basics -> SOLUTION: Trigonometric functions are not that bad, but how would I solve one not on the unit circle? For example, {{{sin^-1 (1/3)}}}      Log On


   

Question 1135000: Trigonometric functions are not that bad, but how would I solve one not on the unit circle?
For example, sin%5E-1+%281%2F3%29
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
All angles are on the unit circle, but only the special ones
have exact values, and all the others, such as your example, can
only be had as a decimal approximation found by calculator.
To get the decimal approximation for your example,

on your TI-83 or TI-84 calculator, press these keys: 

2ND 
SIN
1
/
3
)
ENTER


Get 0.3398369095 if your calculator is in radian mode, or
19.47122063° if your calculator is in degree mode.

Edwin