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Program: TRIRT
TRIRT
- Finds the third side length of a right triangle, given the other two side lengths. (Pythagorean Theorem shortcut!)
- Finds the remaining two sides lengths of a 45-45-90 triangle, given any one side length (45-45-90 Formula shortcut!)
- Finds the remaining two sides lengths of a 30-60-90 triangle, given any one side length (30-60-90 Formula shortcut!)
Useful for:
- SAT
- ACT
- Geometry
- Precalculus
- Trigonometry
- Calculus
Example 2
Q: Find the value of x:
Solution:
Run TRIRT. How?
Select choice 3 for
'30-60-90'.
Choose 2 because
the given side is
the leg that is
opposite the 60°
angle.
Enter:
LEG OPP 60 = 5
The program reports:
Interpretation:
The other leg (y) is about 2.9. The hypotenuse (x) is about 5.8. If you have multiple choice answers in radical form, type the radicals into your calculator to get the decimal values.
See Example 1