Find all the angles between 0º and 360º for which sin = –0.707.
a.45° and 135°
b.135° and 225°
c.45° and 315°
d.225° and 315°

Question

Find all the angles  between 0º and 360º for which sin  = –0.707.
a.45° and 135°
b.135° and 225°
c.45° and 315°
d.225° and 315°

anonymous · Answer

d 225 and 315

anonymous · Answer

xD you're good with this eh?

anonymous · Answer

its for u to decide, u want explanation :)

anonymous · Answer

..mm yeah please ,

anonymous · Answer

see we know that sin of any angle is negative only beneth the x axis, i.e. in 3rd nd 4th quadrant, so we can say that those angles will lie in these two quadrants only , nd only option d has both angels which r in 4th nd 3rd quadrant..... we solvesd this even without using .707 :)

anonymous · Answer

i still dont exactly get how to do this that well , but i sort of see what you mean :)

anonymous · Answer

yeah, it is called getting d answer without pen nd pencil or calculator, just sleekly by luking around at d options :)

anonymous · Answer

xD yeah well my head gets all fjdks f;a whuttaaaa then , you know? :)

anonymous · Answer

not really