Could someone help explain this?

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Anonymous
Could someone help explain this? 2016-10-22 18:56:31 Post No. 208973
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Could someone help explain this? Anonymous 2016-10-22 18:56:31 Post No. 208973 [Report]

Doing extra credit work and the lesson videos are no help.

Anonymous 2016-10-22 19:04:58 Post No.208974
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Anonymous 2016-10-22 19:04:58 Post No.208974 [Report]

x= 45 degrees

Anonymous 2016-10-22 19:05:39 Post No.208975
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Anonymous 2016-10-22 19:05:39 Post No.208975 [Report]

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>>208974
but HOW?

Anonymous 2016-10-22 19:07:01 Post No.208977
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Anonymous 2016-10-22 19:07:01 Post No.208977 [Report]

>>208973
because triangle angles always equal 180, and 90 is already given, so that means that there is 90 left, so divide 90 by two and you get x= 45

Anonymous 2016-10-22 19:08:50 Post No.208978
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Anonymous 2016-10-22 19:08:50 Post No.208978 [Report]

>>208975
look up pythagorem theorem

Anonymous 2016-10-22 19:09:12 Post No.208979
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Anonymous 2016-10-22 19:09:12 Post No.208979 [Report]

File: 45.png (309KB, 875x525px) Image search: [Google]

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>>208974
>>208977
it was not 45

Anonymous 2016-10-22 19:09:24 Post No.208980
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Anonymous 2016-10-22 19:09:24 Post No.208980 [Report]

x = 38.7

Anonymous 2016-10-22 19:12:09 Post No.208984
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Anonymous 2016-10-22 19:12:09 Post No.208984 [Report]

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>>208980
that's right,but HOW

Anonymous 2016-10-22 19:12:11 Post No.208985
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Anonymous 2016-10-22 19:12:11 Post No.208985 [Report]

https://www.khanacademy.org/math/basic-geo/basic-geometry-pythagorean-theorem/pythag-theorem/v/the-pythagorean-theorem

Anonymous 2016-10-22 19:16:10 Post No.208986
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Anonymous 2016-10-22 19:16:10 Post No.208986 [Report]

Simply draw the triangle and measure the angle. This is how engineers solved those types of problems all the time before computers were a thing.

Anonymous 2016-10-22 19:27:36 Post No.208992
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Anonymous 2016-10-22 19:27:36 Post No.208992 [Report]

File: sin-cos-tan.gif (10KB, 400x151px) Image search: [Google]

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Tan x = 8/10

Tan x = 0.8

x = 38.6598

https://www.mathsisfun.com/sine-cosine-tangent.html

Anonymous 2016-10-22 19:34:03 Post No.208996
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Anonymous 2016-10-22 19:34:03 Post No.208996 [Report]

>>208974
>>208977

It can't be 45 because both sides aren't equally long dumbasses.

Anonymous 2016-10-22 19:44:40 Post No.209002
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Anonymous 2016-10-22 19:44:40 Post No.209002 [Report]

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>>208985
shows me exactly what was in the lesson video, did not help.

Anonymous 2016-10-22 19:47:39 Post No.209005
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Anonymous 2016-10-22 19:47:39 Post No.209005 [Report]

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sorry for being so retarded anons,i just want to understand.

Anonymous 2016-10-22 20:02:24 Post No.209017
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Anonymous 2016-10-22 20:02:24 Post No.209017 [Report]

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i give up

Anonymous 2016-10-22 20:09:38 Post No.209021
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Anonymous 2016-10-22 20:09:38 Post No.209021 [Report]

>>209017

Did you read this

>>208992

Anonymous 2016-10-22 20:17:43 Post No.209024
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Anonymous 2016-10-22 20:17:43 Post No.209024 [Report]

>>209021
i did, i just dont know what to do with the decimal that i got.

Anonymous 2016-10-22 20:21:40 Post No.209028
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Anonymous 2016-10-22 20:21:40 Post No.209028 [Report]

>>209024

>i just dont know what to do with the decimal that i got.

Did you get 0.01396etc?

You have to use arctan, not tan.

Anonymous 2016-10-22 20:23:19 Post No.209029
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Anonymous 2016-10-22 20:23:19 Post No.209029 [Report]

>>209024
Do you have a scientific calculator . What make and model is it

Anonymous 2016-10-22 20:23:53 Post No.209031
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Anonymous 2016-10-22 20:23:53 Post No.209031 [Report]

>>209028
i got 0.8 like the other anon,i just dont know what to do with it.

Anonymous 2016-10-22 20:28:23 Post No.209040
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Anonymous 2016-10-22 20:28:23 Post No.209040 [Report]

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>>209029

Anonymous 2016-10-22 20:31:31 Post No.209047
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Anonymous 2016-10-22 20:31:31 Post No.209047 [Report]

You need to find what angle has a tan of 0.8

on the calculator press

2nd

Tan

.8

)

=

Anonymous 2016-10-22 20:33:15 Post No.209048
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Anonymous 2016-10-22 20:33:15 Post No.209048 [Report]

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>>209047
huh would you look at that, its that easy.
thanks for your help lads, have a doggo!

Anonymous 2016-10-22 20:36:28 Post No.209050
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Anonymous 2016-10-22 20:36:28 Post No.209050 [Report]

>>209031

The arctan of 0.8 is 38.659

so the angle is 38.7 to the nearest tenth.

Anonymous 2016-10-23 00:14:57 Post No.209146
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Anonymous 2016-10-23 00:14:57 Post No.209146 [Report]

>>208973
SOH CAH TOA

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible. Read more on this topic here - https://archived.moe/talk/thread/1694/

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/