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Navigation Word Problem 

Khan Academy
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Trigonometry problem involving two ships colliding.

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5 окт 2024

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Комментарии : 54   
@CGM20
@CGM20 10 лет назад
we're going over water so let me do it in blue haha, this guy cracks me up
@harshagrawal9699
@harshagrawal9699 7 лет назад
well he is smarter than you
@green_razor8569
@green_razor8569 4 года назад
harsh agrawal weird flex but ok
@reverseimagesearch0results363
@reverseimagesearch0results363 4 года назад
@@green_razor8569 not funny, didn't laugh
@vend1ngmachine169
@vend1ngmachine169 3 года назад
Tf is this reply section what are you on
@Sarah-sv3yu
@Sarah-sv3yu 7 лет назад
"I have a problem here from my cousin" LMAO
@akaheyxd1577
@akaheyxd1577 3 года назад
He used to make vids for his cousins the understand maths and other subjects before a LONG time ago ;V
@rresist1288
@rresist1288 Год назад
15 years ago and this never gets old
@InfinitelyManic
@InfinitelyManic 16 лет назад
If tan (75) = 3.732 (in degrees) this would make the speed of the small smuggling craft = 23/3.732 = 6.163 knots.
@adamdee1867
@adamdee1867 8 лет назад
it would be easier to follow if we could read the question as you explain your steps
@austinsalgadoe2929
@austinsalgadoe2929 10 лет назад
THANKS ALOT! AS THIS IMPROVED MY KNOWLEDGE OF TRIGONOMETRY BEARINGS> :)
@joshuariggleman4791
@joshuariggleman4791 5 лет назад
The Organic Chemistry Teacher for the win
@joshuariggleman4791
@joshuariggleman4791 4 года назад
Quinzel Sabina go
@shehaa1068
@shehaa1068 11 лет назад
i always have trouble finding the interior angles.. and the bearing questions on my tests are almost never for right angle triangles. if they were, we could easily use SOH CAH TOA, like you should've done with this example. please do a non-right angle triangle example! :(
@GenericCoder
@GenericCoder 12 лет назад
Really interesting problem thanks alot.
@ClancyXanecrest
@ClancyXanecrest 14 лет назад
@Inferno0619 He could have chosen either angle, but choosing the 15 would've ALSO led to tan (rather than sin like you asked) because the known sides are opposite and adjacent. Using that knowledge leads you to ... tan (15) = x / 23, and I assume you can figure out the rest :)
@williamwarren9397
@williamwarren9397 6 лет назад
you found the speed, but how do u find the bearing?
@immajessebabe12
@immajessebabe12 11 лет назад
Can't you just use the sine rule?
@victoroscar35
@victoroscar35 10 месяцев назад
Those taking the merchant marine certification test for fishing guide are tested for navigation skills. Could you provide the skills to past those few mathimatical navigation questions. The difficulty of navigation part of the exam is far and above 905 of the MMC manual questions. For these navigation question candidates often have to quit self study and go to significant, sometimes prohibitive expense to enroll in a brick and motor school to complete an exam that otherwise would have been attainable online.
@tortmojaves6041
@tortmojaves6041 7 лет назад
Isn't the answer to this wrong? He got TOA backwards. He did adjacent over opposite. I got 23 tan(15 deg) as an answer, or 6.16283
@malcolmjarrett7595
@malcolmjarrett7595 7 лет назад
same tan(15)=x/23 then you go tan(15)*23=(x/23)*23 therefore x= tan(15)*23 x=6.16283
@malcolmjarrett7595
@malcolmjarrett7595 7 лет назад
however when you work it as he did it still equates to 6.16283
@jerfersonmatos28
@jerfersonmatos28 6 лет назад
It's not backwards
@joshuariggleman4791
@joshuariggleman4791 5 лет назад
Please delete this comment this is hurting me it’s the right way I don’t know why you think it’s backwards
@mohammedwalidhossain4557
@mohammedwalidhossain4557 5 лет назад
Man, you're the best
@dic831
@dic831 12 лет назад
hi,i have a problem stating that..Airport B is 200 mile due east of airport A.T reach airport C,a plane flies from A on a course of 346.35 degree or from B on a course of 302.2 degree. Find the distance from A to C and from B to C. thanks!
@airplaneairbusa380fan5
@airplaneairbusa380fan5 3 года назад
whos watching this during covid :( i get nostalgia when watching this video
@abigfootwithinternetaccess8605
@abigfootwithinternetaccess8605 2 года назад
what is wrong with you
@PurpleBandit3000
@PurpleBandit3000 13 лет назад
@rAiNiEpUn007 23 knots was given already. T is time. 23t is distance since distance= speed multiplied by time. x is the speed of the other boat.
@alicerose121
@alicerose121 10 лет назад
great explanation.
@rawpower2672
@rawpower2672 6 лет назад
At what grade do you study this subject in USA
@cheesecake9178
@cheesecake9178 6 лет назад
Raw Power 10 for Canada
@danielled7135
@danielled7135 5 лет назад
GMD Shockwave um actually u learn it in grade 11 in Canada
@joshuariggleman4791
@joshuariggleman4791 5 лет назад
Learning it in 11th
@E.K_Bernard
@E.K_Bernard 4 года назад
Raw Power 11 in Ghana
@RatedRudy4
@RatedRudy4 14 лет назад
i get how he figured out the problem, just don't know why he used the 75 degree angle to solve it instead of the 15 degree angle, he could have used sine function to do it too couldn't he?
@rohansreerama5357
@rohansreerama5357 9 лет назад
I don't understand why the time would be the same because one boat could go for 15 mins (for e.g) and get to one spot while the other boat traveled 10 minutes to get to the same spot so I don't see how u can suppose the times are the same without knowing all the triangle lengths first
@qaisarnawaz7236
@qaisarnawaz7236 7 лет назад
he was apllying wrong logic.I agree...but the question is right. Knot unit is used to measure a ship's speed not its distance :)
@user-ke5vf9mm5y
@user-ke5vf9mm5y 6 лет назад
Ugh. Distance x Time = Speed. He's correct!
@chiamakaokafor8761
@chiamakaokafor8761 7 лет назад
is it possible to use law of sines to solve this problem?
@mahnoormirza3786
@mahnoormirza3786 7 лет назад
yea right ..
@mahnoormirza3786
@mahnoormirza3786 7 лет назад
i aslo wanna ask this question
@javairiasajjad2890
@javairiasajjad2890 6 лет назад
I think no, because you know, it's a right triangle and sine and cosine rules are for acute and obtuse angles. I'm not sure if they ACTUALLY work with right triangles too somehow. But still right angled triangles trignometric formulas are the best option here.(or maybe the only)
@NaseemAlNajiMusic
@NaseemAlNajiMusic 14 лет назад
Thanks, I got the same answer!
@ghostaccountlmao
@ghostaccountlmao 3 года назад
They really said "A smuggling craft from the cartel carrying 20 tons of cocaine is simultaneously traveling at a course of 195 degrees from Venezuela" roflmao
@ayushtiwari2594
@ayushtiwari2594 6 лет назад
can anyone tell me what software he uses to draw his work
@alboss22
@alboss22 4 года назад
im here in 2020 nice.
@rAiNiEpUn007
@rAiNiEpUn007 13 лет назад
I understand EVERYTHING!.. until 4:55 i dont get the bit where he got the 23 knots(wat is that?) anyways.. and how did he knw that that length was 23t?? isnt 23 the speed! not the distance... ??? and why is 't' there?? wat does t stand for?? and lastly 'x t'?? wat is thatttttttttttttttt?????????????????????????? plz help. quick my exam is next week!!
@xavieratlantica1011
@xavieratlantica1011 4 года назад
Hope you passed your exam. Knots are a unit of speed in boating world, it's like km/h. The distance is the speed x time, and t is time. xt: x is the speed of the second boat, t is the time, which is the same since they both started at the same time. You probably know this by now, but just to help others who might come across this video years later.
@ONIKdeftones
@ONIKdeftones 11 лет назад
trigonometry bearings word problems are fucking hard to understand!!!!!
@stuffstuffmorestuff
@stuffstuffmorestuff 11 лет назад
god i love khan academy.
@darkninja___
@darkninja___ 7 лет назад
I live in grand haven...
@hubbadubchub
@hubbadubchub 6 лет назад
Nice. Do you like it there?
@Konistic
@Konistic 7 лет назад
i love
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