SOLUTION: Could you help with this multiple choice problem?: 1) Without using a calculator, find the exact value of sin^-1 (- radical 2/2). a. pi/3 b. pi/2 c. -3pi/4 d. -pi/4 Thank

Question 834299: Could you help with this multiple choice problem?:
1) Without using a calculator, find the exact value of sin^-1 (- radical 2/2).
a. pi/3
b. pi/2
c. -3pi/4
d. -pi/4
Thank you!
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Could you help with this multiple choice problem?:
1) Without using a calculator, find the exact value of sin^-1 (- radical 2/2).
a. pi/3
b. pi/2
c. -3pi/4
d. -pi/4
***
On a unit circle, rotate clockwise 3π/4 or 135˚, ending with a reference angle of π/4 in quadrant III where sin<0. sin(π/4)=-√2/2
so,sin^-1 (- radical 2/2)=-3π/4(ans c)
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