ACT Math 5.5 Trigonometry

ACT Math: Trigonometry Drill 5, Problem 5. What is the length of side z?

ACT MathTrigonometry
ACT MathematicsTrigonometry
Foreign LanguageArabic Subtitled
Chinese Subtitled
Korean Subtitled
Spanish Subtitled
GeometryRight Triangles and Trigonometry
LanguageEnglish Language
Product TypeACT Math
TrigonometrySOHCAHTOA (values and properties of trig functions)
Solving right triangles
Trigonometric relations in right triangles

Transcript

00:30

the angle. Okay... Pythagorean Theorem time.

00:33

Five squared plus twelve squared equals z squared.

00:37

25 plus 144 equals z squared.

00:39

169 equals z squared.

00:41

Taking the square root of both sides, we get that 13 equals z, which means B is the correct

00:47

answer. Oh, and one last thing.

00:49

5, 12, 13 is a common right triangle that you should memorize for the test. Don't let

00:54

it ambush you on test day.