• SAT Triangle Solver ti84 program Main Menu with options on a white background
  • Menu for right triangle calculations with options on a white background
  • Menu for finding missing sides of a right triangle with options to find the hypotenuse or a leg.
  • Mathematical calculation of hypotenuse with side lengths displayed on a white background
  • Math problem related to hypotenuse expressions with a correct answer highlighted.
  • Right Triangle Help Menu explaining the Pythagorean Theorem with text on a white background.
  • Right Triangle Help Menu explaining the Pythagorean Theorem with an example on a white background.
  • ti84 program Menu for finding missing angles of triangles with purple buttons and white text.
  • Diagram showing a missing triangle angle problem with calculations and answers.
  • Menu options for trigonometric ratios with a purple border and text.
  • Menu for choosing trigonometric functions with explanations on a white background
  • Text-based menu for solving special right triangles with hypotenuse, leg, and help options.
  • ti84 program for solving triangle area, perimeter, and equilateral triangles with a purple border.
1 13

Triangle Solver (TI-84 Plus CE)

Triangle Solver (TI-84 Plus CE)

$20.00 USD
$40.00 USD $20.00 USD
Sale Sold out
Shipping calculated at checkout.

⚠️ Before You Buy:
• Digital product — No refunds
• Requires TI-84 Plus CE or TI-84 Plus CE Python
• NOT compatible with older TI-84 Plus (black & white screen)
• By purchasing, you confirm you understand this is a digital download and cannot be returned

Triangle Solver (TI-84 Plus CE)

📐 Right Triangles, Special Triangles, Law of Sines & Cosines, Area & Perimeter

Triangle Solver Program Demo

▶️ Watch: Triangle Solver Demo

Work through triangle problems faster and with fewer setup mistakes. TRISOLV3 is a TI-84 Plus CE solver for common triangle types — right triangles, oblique triangles, and special triangles — using SOH-CAH-TOA, Law of Sines, Law of Cosines, and special triangle ratios. Also calculates area and perimeter. Useful for Geometry, Algebra 2, SAT-style practice, and any course involving trig-based triangle relationships.

What's Included

File Name Type What It Does
TRISOLV3 Solver Program Triangle solver covering right triangles (SOH-CAH-TOA, Pythagorean theorem), oblique triangles (Law of Sines, Law of Cosines), special triangles (30-60-90 and 45-45-90 ratios), similar triangles, triangle area (base-height and trig-based), and perimeter. Works in degree mode.

What TRISOLV3 covers:

  • ✅ Right triangles — SOH-CAH-TOA and Pythagorean theorem
  • ✅ Oblique triangles — Law of Sines and Law of Cosines
  • ✅ Special triangles — 30-60-90 and 45-45-90 ratios
  • ✅ Similar triangles
  • ✅ Area — base-height and trig-based formulas
  • ✅ Perimeter

Best for: Students in Geometry, Algebra 2, SAT-style math practice, and anyone who wants faster triangle calculations on a TI-84 Plus CE.

Note on SAT use: TRISOLV3 is best used for practice, homework, and timed drills before test day. For SAT exam day, use the SATSAFE program included in the SAT Math bundle, which is built to comply with current College Board calculator policies.

Already have the SAT Math Bundle?

TRISOLV3 is already included in the SAT Math Calculator Bundle — no need to purchase separately. The bundle also includes SATSAFE, GEOFIG8, UNITCOND, and SAT9B for home practice.

View SAT Math Bundle →

Compatible Calculators

✅ TI-84 Plus CE
✅ TI-84 Plus CE Python
✖ Not for TI-83, TI-Nspire, or Casio calculators.

Delivery

Instant digital download. You receive the TRISOLV3.8xp file after purchase.

Need help getting started? Complete Install Guide (2026) | Troubleshooting | FAQs

AP® is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, this product.

What do I need to install the program?

  1. TI84 Plus CE (or Python) Calculator
  2. TI Connect CE Software
  3. Update Your TI calculator software
  4. USB mini to USB cord (Should have came with your calculator, or you can buy one from Staples or Best Buy)

How do I install the program on my calculator?

Watch this quick video

Can you help me with the TI connect software?

Yes! Take a look at this guide for the TI Connect CE Software for more help.

View full details