Question

sin^-1(-1) =?

Answer 1

this mean the angle(s) whose sine is -1

Answer 2

so the answer is 1?

Answer 3

no - sorry that diagram is confusing

the angle whose sine is 1 is actually 90 degrees

angle whose sine is -1 is -90 degrees
or as positive angle its 270 degrees

Answer 4

so the answer is 3pi/2

Answer 5

in radians yes

Answer 6

actually thats the lowest angle with sine -1 you could keep adding another 2pi ( one more revolution) add infinitum
so in general form the answer is
3pi2 + 2npi where =0,1,2,3....

Answer 7

* 3pi/2

Answer 8

okay thanks

Answer 9

yw