ALGEBRA 2 HELP!

If sin 0 = sqrt3/2, which could not be the value of 0?

Question

ALGEBRA 2 HELP!

If sin 0 = sqrt3/2, which could not be the value of 0?

primeralph · Answer

you mean theta?  0 with a horizontal line?

jim_thompson5910 · Answer

use this unit circle http://www.regentsprep.org/Regents/math/algtrig/ATT5/600px-Unit_circle_angles_svg.jpg

anonymous · Answer

a negative

anonymous · Answer

yes @primeralph

anonymous · Answer

Ohhhh 0 is just theta xD That confused me for a minute. When we are dealing with sin, we are working with the y coordinates. So use the unit circle that jim posted and find a y coordinate that matches sqrt(3/2).

anonymous · Answer

Oops, you actually wrote (sqrt3)/2, look for that one >.<

anonymous · Answer

here are the multiple choice answers


60 degrees
120 degrees
240 degrees
420 degrees

anonymous · Answer

The degrees are listed on the chart too. The chart shows that it is 60 degrees, since at 60 degrees the y value is (sqrt3)/2

jim_thompson5910 · Answer

so as smokeydabear is saying, 

sin(60) = sqrt(3)/2

so that eliminates 60 as a possible answer

anonymous · Answer

Ok...

anonymous · Answer

Oh derp, we are finding what it CAN'T be, I'm sorry! >.< Then yes it isn't 60 degrees.

jim_thompson5910 · Answer

yeah they throw those tricks in to make sure you're still awake

anonymous · Answer

haha @jim_thompson5910

anonymous · Answer

Which is why you should always get plenty of rest before exams! Which I never do ._.

jim_thompson5910 · Answer

...that's of course if math hasn't bored you to sleep already

hopefully that's not the case

jim_thompson5910 · Answer

yes, definitely a good idea smokeydabear

anonymous · Answer

Well I have to go I will be back a little later. Thanks though.

anonymous · Answer

Have to admit, it does get really tedious after a while, but not at this stage, so keep plowing forward Sue! Do you understand how we determined the above?