ACT Math 5.5 Trigonometry
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ACT Math: Trigonometry Drill 5, Problem 5. What is the length of side z?
|Foreign Language||Arabic Subtitled|
|Geometry||Right Triangles and Trigonometry|
|Product Type||ACT Math|
|Trigonometry||SOHCAHTOA (values and properties of trig functions)|
Solving right triangles
Trigonometric relations in right triangles
the angle. Okay... Pythagorean Theorem time.
Five squared plus twelve squared equals z squared.
25 plus 144 equals z squared.
169 equals z squared.
Taking the square root of both sides, we get that 13 equals z, which means B is the correct
answer. Oh, and one last thing.
5, 12, 13 is a common right triangle that you should memorize for the test. Don't let
it ambush you on test day.