![]() For example, you’ve likely used a phrase similar to “ My Very Educated Mother Just Sent Us Nine Pizzas” to help you remember the nine planets and their order in our solar system:Īssociation is a fairly easy technique to help you remember new information. Creating the acronym (and word) “pace” from the items’ first letters and thinking “pace” as you walk through the grocery store may help you remember all the items you need:Īn acrostic is a similar mnemonic device, but it can be a sentence or a whole phrase instead of just one word. You can also use acronyms as mnemonic devices in day-to-day situations like grocery shopping.įor example, if you need to remember to buy pasta, apples, cilantro, and eggs at the store and you don’t have a way to write a shopping list, you may easily forget some random items. For instance, many government agencies use acronyms, such as NATO (North Atlantic Treaty Organization) or NASA (National Aeronautics and Space Administration). scuba (self-contained underwater breathing apparatus)Īn acronym doesn’t even need to be a “real” word - as long as it sounds like one.laser (light amplification by stimulated emission of radiation).Some words we commonly use as “stand-alone” words are acronyms. For instance: HOMES is an acronym for the five Great Lakes: Below are five of the most common types of mnemonic devices:Īn acronym is a word created from the first letter of a group of words or names. There are several types of mnemonic devices, and many of them overlap in how they work. Refer to the picture above for reference.Share on Pinterest Design by Wenzdai Figueroa For example, tangent will only be positive in quadrants 1 and 3 and negative in quadrants 2 and 4. Each trig function has 2 quadrants in which it is positive and 2 quadrants where it is negative. This is where that mnemonic came into play. The final part of the process was the sign of the answer, whether or not it would be positive or negative. If you forgot, the equation for Pythagorean theorem a 2 + b 2 = c 2. How did we do this? good 'ole Pythagorean theorem. We used the x-coordinate as the horizontal line in the triangle and the y-coordinate as the vertical line.If we were asked to find either sine, cosine, or their inverses, we had to find the hypotenuse of the triangle before we could continue. In some problems, the coordinates of some points were given and we were asked to find the trig function of it. We used special triangles to convert degrees to radians and vice versa as well as find the trig function of points and angles. ![]() Refer to the image below for the law of cosines equation. We had to use the law of cosines for problems like this. Find an expression in terms of X for the distance between the two planes. ![]() Here's an example, The locations, given in polar coordinates, of two planes approaching an airport are (x mi, 38 °) and (3x mi, 98 °). Most of them were easy and could be found on the unit circle but there were a couple of difficult ones. The first step was to find the missing side length through Pythagorean Theorem and find the arc tangent of y/x. We had to use Pythagorean Theorem for most of them. Both of them had to do with converting from polar coordinates to cartesian/rectangular or vice versa. We worked on the polar coordinates worksheet and the polar coordinates test review. The test was pushed to Monday which made this week extremely easy. We were supposed to take a test on Friday but the seniors in the class were out on a field trip or something like that. So this was another work week in our precalculus class. If you don't remember, the foil method is a process used in algebra to multiply two binomials.They are still easy its just that you have to do a lot of work and I'm not a bug fan of that. There was one where we had to use that foil method first and add the results which were fractions that did not have common denominators. The whole goal of the assignment was to recognize patterns but there's a lot of work needed to be done as well. At first, they seemed easy to do but it got more complicated really quickly. But anyway, we didn't take any notes this week and both Wednesday and Friday were work days. What's worse is that they didn't even figure out our rule, they guesses which letter make which word and solved it that way. We had the message of the team that cracked our code so the game was over instantly. we lost again but this time we got third place. On Monday we had our code wars thing and it didn't even last that long.
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