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Feb. 26, 2014

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Session Transcript - Math - Geometry, 2/19/2014 10:58PM - Tutor.comSession Date: 2/19/2014 10:58PM
Length: 28 minute(s)
Subject: Math - Geometry


System Message
[00:00:00] *** Please note: All sessions are recorded for quality control. ***

Alexis (Customer)
[00:00:00] describe each vector as an ordered pai. give the coordinates to the nearest tenth
[00:00:05] hi

Alec C (Tutor)
[00:00:08] Welcome to Tutor.com ! How can I help you today?

Alexis (Customer)
[00:01:00] hi
[00:01:03] i need help

Alec C (Tutor)
[00:01:17] Ok. Can you write the problem on the board?
[00:02:44] Can you label the origin?

Alexis (Customer)
[00:03:59] is x and y correct ?

Alec C (Tutor)
[00:04:20] Give me a moment
[00:04:59] I'm sorry but they are incorrect... although x is really close
[00:05:43] How should we start this problem?

Alexis (Customer)
[00:05:49] im not sure\

Alec C (Tutor)
[00:06:17] Maybe it will help if I add this line?

Alexis (Customer)
[00:06:30] yeah

Alec C (Tutor)
[00:06:30] Do you know what to do now?

Alexis (Customer)
[00:07:22] no

Alec C (Tutor)
[00:07:33] Do you see any shapes on the graph?
[00:09:17] Right :) So what does that give you?
[00:10:40] Yes, but what direction is x going? left or right on the x axis?

Alexis (Customer)
[00:11:03] IDK

Alec C (Tutor)
[00:11:34] If you had to label the x coordinate of this point, what would it be?

Alexis (Customer)
[00:11:58] IM NOT SURE

Alec C (Tutor)
[00:12:28] Your equation is right. 37.1 is the absolute value of our x... but is x positive or negative?

Alexis (Customer)
[00:12:36] neg

Alec C (Tutor)
[00:12:42] Right, so x is...?

Alexis (Customer)
[00:12:59] negative?

Alec C (Tutor)
[00:13:24] :) Yep. What's the numerical value of x?

Alexis (Customer)
[00:13:40] -37.1

Alec C (Tutor)
[00:13:51] Exactly :) Great job! Now can you solve for y?

System Message
[00:15:02] *** Lost connection from Alexis (Customer). Waiting for reconnect... ***

Alec C (Tutor)
[00:16:22] That is the correct answer but your equation isn't quite right... What would our angle be?

Alexis (Customer)
[00:17:08] 62

Alec C (Tutor)
[00:17:49] No. If sin is opposite over hypotenuse, what angle is opposite to y?

Alexis (Customer)
[00:18:08] im not sure

Alec C (Tutor)
[00:19:28] Look at the picture. You correctly used cosine of 28 to find the adjacent leg over the hypotenuse. Now is y adjacent or opposite of 28?

Alexis (Customer)
[00:19:50] adj

Alec C (Tutor)
[00:20:17] What does adjacent and opposite legs mean?

Alexis (Customer)
[00:20:48] i know what they r

Alec C (Tutor)
[00:21:04] Ok. But y isn't adjacent to 28.

Alexis (Customer)
[00:21:16] ohhh
[00:21:22] i thought why was this
[00:21:34] y

Alec C (Tutor)
[00:21:48] They are equal

Alexis (Customer)
[00:21:53] ohh
[00:22:00] ohhhh
[00:22:03] so its 28

Alec C (Tutor)
[00:22:09] Yes

Alexis (Customer)
[00:22:43] whats next
[00:22:45] o, confuse

Alec C (Tutor)
[00:23:08] Think about your trig rules.
[00:23:20] Sin(angle) = Opp/Hypotenuse
[00:23:28] So what is our angle?

Alexis (Customer)
[00:23:28] whats the opposit

Alec C (Tutor)
[00:24:22] That's right except you are using cosine instead of sin.
[00:25:23] Yep. So is it positive or negative?

Alexis (Customer)
[00:25:40] positive?????

Alec C (Tutor)
[00:26:07] No... When you go up a graph y gets higher, when you go down, it gets lower.

Alexis (Customer)
[00:26:13] negativeeee

Alec C (Tutor)
[00:27:09] That's right :) Good job. I have to let you go, but before we leave, can I clarify anything for you?

Alexis (Customer)
[00:27:23] no thanks

Alec C (Tutor)
[00:27:51] Great work. Thanks for using Tutor.com ! If you have time, can you fill out the survey at the end? Bye!