Question

determine the value of arcsin(-sqr(2)/2)

Answer 1

compute it in the calculator and it using the asin or sin^-1 key

Answer 2

think of that question this way....

\(\large sin\theta = -\frac{\sqrt2}{2} \)
what theta will make this true?

Answer 3

ummm

Answer 4

you familiar with the trig values of the common angles?
30, 45, 60 degrees?

Answer 5

or u familiar with the unit circle?

Answer 6

3pi/4
and 5pi/4

Answer 7

ok... before you answer, take a look at page 3....
http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf

Answer 8

sin is negative only in th 3rd and 4th quadrants....

Answer 9

also, you need to remember the RANGE of arcsin....
it ranges from -pi/4 to pi/4.....

so the answers you mentioned are incorrect....