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SAT Math: Calculating Side Length of a Triangle Using Proportions or Trigonometric Functions 2 Views


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Description:

For the right triangle above, if cos(90° – Z°) is , what is the length of YZ?


Transcript

00:00

Yeah Straighter than thirteen So why's he must be four

02:02

times greater than five which is twenty Well if five

02:05

twelve thirteen triangles aren't your thing the pythagorean theorem can

02:08

offer a helping hand Here is well the high pot

02:10

news is fifty two So that's our sea that gives

02:13

us y c squared Plus forty eight square day is

02:15

fifty two squared Why's he squared Plus two three or

02:18

four is twenty seven o four and then we just

02:21

kind of subtract from both sides against y z squared

02:24

is four hundred square root of four hundred twenty so

02:28

length of y z is twenty The answer is b

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