<p>Like I said, if you don’t know how all the functions of your calculator work, then you need to spend some time “getting to know” it by reading the manual. </p>
<p>To get sin(60) as a decimal, you need to type it in and press the green diamond and then enter. It could have also been that you were in radians and needed to switch to degrees.</p>
<p>There is no log key. You must go into your catalog and get it there. But the answer will be in natural logs, so you must press the green diamond before you press enter.</p>
<p>Personally, I found the 89 very useful in my pre-calc and trig class. Please do not think that it is only good for calc and beyond.</p>