<p>I was taking a practice test for math level2 (barron's, which seemed to be MUCH harder than PR's)</p>
<p>I came across a few problems with trig functions that can be simply solved.
So I entered, for example, solve((1-cos(x))/sin(x))=sqrt(3)/3,x)</p>
<p>and I get something really weird like -60*(6@n1-1)</p>
<p>Does anyone know how to interpret what that means??</p>
<p>I know I know, it's a cheap way, but if I can save time and pain of thinking, I want to do it!</p>
<p>Yeah I'd like to know as well. But if you're working in radian mode and want a numerical value, just click the green diamond button before hitting enter and that should give you -6.something. In degree mode it gives u -360 times some weird @ thing as well. I don't know how to interpret it either.</p>
<p>Do it by hand, its always easier... and many times quicker than having to use your calculator</p>
<p>you are probably in the wrong mode. </p>
<p>And if you know how to do it correctly it is always easier to use a calculator, and probably preferable: there is less chance of screwing up and making a simple mistake, like wrongly adding two numbers or something. I always prefer the calculator.</p>
<p>ive got a question about using ti89 for trig problems. I put in solve(sin2x<sinx,x) and="" also="" set="" constraints="" x="">=0 and x<=2pi, but it jus gives me back sin2x-sinx<0. How do I "fix" this?</sinx,x)></p>
<p>buuummmmmpp</p>
<p>also, how do u change the base of Log on ti-89?</p>
<p>i don't think you can change the base of log, but if you have log base 2 of 10, then you could do log10/log2 or ln10/ln2</p>
<p>OH! Found it on the manual!</p>
<p>it basically means any Arbitrary integer!
so for the example I showed you, it's 0! so -60*-1 = 60 which was the right answer on the barron's practice test!</p>