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CAHSEE Math 1.3 Measurement and Geometry 190 Views


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Description:

CAHSEE Math Measurement and Geometry: Drill Set 1, Problem 3. What is the measurement in degrees, minutes, and seconds?

Language:
English Language

Transcript

00:03

Here's a shmoopy question for you...

00:05

Brian has left his skateboard leaning up against the wall in the hallway yet again.

00:10

His mother trips over it every time it's at an angle of less than 36° 8'.

00:15

If the angle of the skateboard measures 36.125°,

00:19

what is its measurement in degrees, minutes, and seconds?

00:23

1 degree = 60 minutes, and 1 minute = 60 seconds.

00:27

Here are the potential answers...

00:30

The question is asking whether we know what a degree, minute and second are...

00:34

in circle terms... So... the 36 is just 36 and it stays the same --

00:39

we should know this intuitively because 36 degrees is... 36 degrees...

00:44

...but we can also look at the answer set -- they all start with 36. So leave that one alone.

00:51

Move on to minutes. To convert the decimal

00:54

part of degrees, we just multiply that number by 60 to get the partial degree or minutes.

00:59

So if we take .125 and multiply it by 60... we get 7.5 minutes.

01:06

If we wanna get rid of the decimal in the minutes -- that .5 thing --

01:09

then we can state it in seconds. To do so, we again multiply by 60 and we get

01:14

.5 times 60 which is... 30 seconds. So the fully converted figure is 36 degrees,

01:22

7 minutes and 30 seconds... or answer B. B, as in... "Brian, you're grounded!"

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