Videos

9-4 and 9-5 Trig Functions video 3

Added Mar 17, 2017 •

Copy this URL:
Embed code:	<iframe class="edlio-embed-player" type="text/html" width="640" height="360" src="//www.vhstigers.org/apps/embed/?v=141187" frameborder="0" allowfullscreen></iframe> Change dimensions

Show Transcript

these last two examples are actually trying to use information that give us to find the missing side length it says round your answers to the nearest again I don't have a calculator I'm going to rain I want to go get one really quick Families my phone actually so  which angle measure do they give us do they give me angle B angle angle C to give you angle measure B and specifically that angle measure is 15  and they tell us that we're trying to find side lengths BCS I'm going to go ahead and put an X right here where BC is I from angle 15  what is 10.2 is it the opposite side is that the adjacent side or is it your iPod it's across from it so it's your opposite side  and then what is X going to be is extra opposite major Jason side or your hypotenuse  access your adjacent side which one of those me and let's write them down again so we don't forget  so toll  which one of these three sine cosine or tangent uses oh and you guys are saying tangent tell me to do tangent and you know how normally we do tangent Abby will this time since there's a 15 there any is tangent 15 equals opposite which we labeled as 10.2 over adjacent which is X in general how do we get something out of the general you multiply it some of them multiply X multiply X to both sides X cancels out here so now I have x x tangent 15 equals 10 point so if this tangent was like let's say 3 so let's say it was 3 x x how would you get X by itself will hear that tangent 15 that's all one piece so I'm going to take 10:15  and divide it to both sides change it 15 it cancels out here and here and now I have x equals 10.2 divided by 10 15 if you guys are using my calculators and that's what I meant to tell you guys is to go grab one of my calculators or try and figure it out on your phone Valle your phone you might need to wait for me  to do it there to explain how to do it cuz some of your phones are a little bit weird but if you're using calculators it's 10.2  you at the division sign  tan and then I believe it gives you a print to see and you can close it and then hit equals insulin when you do that which is hold on it's not letting me do it on my phone give me a second I'm sorry 10.2 I'm not 102 10.2 X  oh my goodness this is just like in a long time for me to get the answer to 15 * 10.2 I honestly don't even know I'm getting the right answering alright it's 2.7  I can't remember if that was what so we got in first. But I like took me away too long to try and get that on my phone if you could at least set it up and get it to hear I'd give you full credit on your home and we can practice it on your calculator is especially since I'm not totally sure that my calculator is working because I am not feeling good and my brains not working  what time is I did it wrong .2 / tan 15 okay highlight 38  .06 + that looks more right I'm pretty sure that's the answer sorry guys that took way too long but I might is Last Problem on this video cuz it's not worth it to do one more video alright looking here I have 63 Hotel Minas to find QR so I'm going to put an X work you are is from 63 what is 12.9 and make sure you're paying attention to the is 12.9 your opposite side your adjacent side or your hypotenuse  it's your hypotenuse cuz it's a cross you're 90 degrees and what is X is it your opposite your adjacent or your hypotenuse this one is your opposite and so then which one uses opposite and hypotenuse it is sign some of you sign 63 equal opposite which is x / hypotenuse which is 12.9  and how am I going to get 12.9 out of the denominator multiply 2 besides * 12.9 times 12.9 and so then I have x equals 12.9 times sine 63 that's an N sign 63 and since I already have asked myself I don't need to do anything else to it since I'm just going to plug it in straight to my calculator hopefully my do it right the first time to the take me to drive 12.9  time Ensign x 963 I get 11.49 just like that do you have us on your homework thank you guys inpatient I'm so sorry I don't feel good I'm going to go sleep or something right now okay bye guys have a fantastic Friday and a wonderful weekend I'll see you Monday

Uploaded by Lauren Stouffer.

Videos

9-4 and 9-5 Trig Functions video 3

More videos from Lauren Stouffer