Question

i need help with this inverse. sin-1 (1/2)

Answer 1

It's equal to 30 degrees, because if you look at the unit circle, sin 30 will equal 1/2.

Answer 2

If you can understand normal trig functions (eg. sin, tan, cos), then inverse will be just as easy.

Answer 3

sin_1(x) = y means:

x = sin(y)

what angle gives you a sin of 1/2?

Answer 4

ohhhh where sin = y, y = +1/2 @ 30 degrees

Answer 5

will there be a problem where it isn't a nice value from the unit circle?

Answer 6

I mean, if it pertains to your math class probably not (if calculators are not allowed). But if they do ask you to, then you will probably have access to a calculator. Otherwise it would take a lot of effort to try to find the value if it isn't off the unit circle.

Answer 7

the sin^-1(1/2) does equal 30 degrees (pi/6 radians)

Answer 8

ahhh there is a calculator section. in that case i assume i just type in 2nd the (for example) sin-1 then the number

Answer 9

Yes.

Answer 10

on your computer, there shuold be a calculator program

Answer 11

inv, sin usually gets you the sin inverse

Answer 12

1/2..inv....sin

Answer 13

A ti-83 can easily be able to do this: 2nd => sin => type in number = Answer

Answer 14

my calculator for school I gotta get:
2nd...trig....over to sin-1....input value....close paranthesis...enter

Answer 15

mine is a ti-83 the 2nd then sin button

Answer 16

gets me the answer

Answer 17

thanks!

Answer 18

No problem!