45 degrees since

2. Aperogalics Group Title

Pi/4

3. sara1234 Group Title

can you please explain to me how you got that?

|dw:1351091765743:dw|notice that $\frac{ \sqrt{2} }{ 2 }=\frac{ 1 }{ \sqrt{2} }$ which we remember from the triangle

5. Aperogalics Group Title

simple $\sqrt{2}/2=1/\sqrt{2}$ it will affect only if the value is out of range

6. sara1234 Group Title

what are you talking about? confused the answer is pi/4 how did you get that?

7. Aperogalics Group Title

can u answer my simple questions...........?

8. sara1234 Group Title

which is?

9. Aperogalics Group Title

do u know about domain and range of sin^-1(x)???????

10. sara1234 Group Title

no

11. Aperogalics Group Title

thats y u r getting confused in values

12. Aperogalics Group Title

do u want me to tell about it right now:)

13. sara1234 Group Title

i just want to know how you got that answer

14. Aperogalics Group Title

sin x is basicaly defined for all values of x but -1<sin x<1 happens always when we define sin^-1 x it is a inverse or we can say just opposite to the sinx which is defined for -1<x<1 and answer lies anywhere so a basic principle regien is defined and all other area is called general area so we knoww that sin 45 = 1/$\sqrt{2}$ so sin -1 x = 45 degree or pi/4 radians in principal region.............k

15. Aperogalics Group Title

:)

16. Aperogalics Group Title

thank u first time i feel that i deserve it.lolz:D