<p>In Calc, I ran into an area under a curve problem ( I'm just starting Calculus so I don't know any ways to find exact answers) and by using triangles I find an answer thats pretty close to the actual answer ( off by .025). Is this okay?</p>
<p>Depends entirely on the question in hand. and an error of .025 can either be really good or really awful depending on what the answer actually is.</p>
<p>if you’re supposed to use triangles, use triangles. It should tell you what method you’re supposed to use, and there should be an exact answer based on that method.</p>
<p>The problem solving is more important than the answer.</p>
<p>Wow, I’m an idiot haha, I meant to say RECTANGLES. But yeah, the picture is printed in the textbook as a curve on a plane with rectangles underneath the curve and well, the rectangles aren’t exactly on the labels of the axis.</p>
<p>^ Okay, that’s called using Riemann sums, which is a topic that you will be tested on during the AP exam. It’s a precursor to integration.</p>