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SAT Math: Solving for y When Given Radian Length 2 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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