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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 1
Q: Find the value of x:
Solution:
Run TRIRT. How?
Select choice 1 for
'Pythag'. This will
do the Pythagorean
Theorem for you.
Choose 2 because
the hypotenuse and
leg are given in the
problem
Enter:
HYP = 10, LEG = 4
The program reports:
Interpretation:
The other leg (x) is √84 or about 9.2.
(To simplify √84 = 2√21, use the program RADICALN.)
See Example 2
