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Geometry and Measurement Videos 88 videos

SAT Math 1.1 Geometry and Measurement
719 Views

SAT Math 1.1 Geometry and Measurement. What is the circumference of the circle?

SAT Math 1.2 Geometry and Measurement
246 Views

SAT Math: Geometry and Measurement Drill 1, Problem 2. If A = (0, 4), B = (-3, 2), and C = (1, 0), which point is in the interior of angle ABC?

SAT Math 2.3 Geometry and Measurement
267 Views

SAT Math 2.3 Geometry and Measurement. Find the length of AB.

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SAT Math: Solving for y When Given Radian Length 4 Views


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Description:

If S represents the origin and ∠RST measures radians, what is the value of y?


Transcript

00:00

Yeah Whoa Okay I say t match my purse We

00:05

have a circle here It's not drawn to scale so

00:07

you've got to be skeptical of it We've got to

00:09

wind the rst right there Okay So if s the

00:13

middle thing here represents the origin and our esteemed measures

00:17

pie over three radiance What is the value of why

00:24

Okay Well why Oh why are we looking for why

00:27

we're so used to looking for acts were flexible though

00:30

To make this problem at least a bit more familiar

00:32

Let's convert that radiant measure into degrees Remember we've got

00:36

S Opie radiance over three their time one hundred eighty

00:39

over pi radiance That sixty degrees right there At least

00:42

that's a start The big secret about trigonometry is found

00:45

in its first three letters Trick try Angle triangles are

00:49

always somehow involved with trigonometry In this particular case we're

00:53

dealing with a right triangle so draw one right inside

00:56

the circle And when in doubt just always do that

00:58

on a problem like this Well that angle has been

01:01

labeled thanks to our unit conversion We can also label

01:04

the sides of a triangle using the point to why

01:07

and X is the horizontal access right there So the

01:10

horse on a leg must measure to But well we

01:13

don't know what Why is the proportions of the sides

01:16

on a thirty sixty ninety triangle would be helpful right

01:19

about now and well we have them So they're right

01:21

They're multiplying too By square with three yields Are y

01:24

value So we get to Times Square with three Yeah 00:01:27.02 --> [endTime] it's seek We're not

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