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Mathematics 21 Online
OpenStudy (anonymous):

sin x = -0.7416 How does one get an exact value?

OpenStudy (anonymous):

draw a right triangle:

OpenStudy (anonymous):

|dw:1332172199481:dw| exact value is = arcsin(.7416)

OpenStudy (anonymous):

and remember your problem is a negative sign so this angle is in the 4th quadrant

sam (.sam.):

x=sin^-1 (0.7416) x=47.87 (this is not the solution) |dw:1332172199480:dw| For "negative" 0.7416 look at the negative side, then solve it, 180-47.87=132.13 360-47.87=312.13

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