Question

simplify the inverse trig expression with answers [0,2pi) (more in comments)

Answer 1

\[\sin^{-1} (-1/2)\]

Answer 2

how many answers do you think you'll get here?

Answer 3

sin(what angle) = -1/2....
the y-coordinate is -1/2..

Answer 4

@kaisan , look at your unit circle.... what point has it's y-coordinate -1/2?

Answer 5

here.. page 3
http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf

Answer 6

because the y coordinate is negative the angle must be in the 3rd and 4th quadrants.

Answer 7

yup i see it ^^ sorry for the long reply

Answer 8

i just get confused when i see \[\sin^{-1} \]

Answer 9

yeah, when i see that it change it to this question:

sin (what angle) = -1/2

that's all it means...

Answer 10

ok ^^ thx again