Question

if possible evaluate the expression arcsin1

Answer 1

Are you allowed to use a calculator?

Answer 2

no

Answer 3

You get that this is Sin^-1(1) = x right?

Answer 4

So then Sin(x = 1

Answer 5

no please explain

Answer 6

What do you not understand?

Answer 7

when you said you get...

Answer 8

im a litle confused when it comes to trig

Answer 9

Ok well you know the unit circle right?

Answer 10

yea

Answer 11

http://etc.usf.edu/clipart/43200/43215/unit-circle7_43215_lg.gif

Answer 12

For reference

Answer 13

ok thank you

Answer 14

The x in Arcsin(1 = x is basically the angle that forms when y = 1

Answer 15

Sine is y and Cosine is x right?

Answer 16

yes

Answer 17

so its pi/2

Answer 18

yes or 90 degrees

Answer 19

I remember it as Sine-y is whin-y, kinda silly. I dont know if that will help you remember cosine and sine but it helps me.

Answer 20

lol ok thanx

Answer 21

wait so arcsin means opposite

Answer 22

Kinda, instead of the coordinate it is the angle

Answer 23

Same with arccos

Answer 24

wdym the angle could you give me an example sorry if I'm bothering to much

Answer 25

Yeah well like arccos(1 you would find where x = 1

Answer 26

oh i get it

Answer 27

and thats it is 1 where x is 0 degrees

Answer 28

Or 0 radians so you would answer 0

Answer 29

ok thank you so much

Answer 30

Yup! No problem