On this page
How to Solve Any Triangle
Formula
Using the law of cosines and law of sines, you can find all sides and angles from two sides and the included angle.
The law of cosines: c² = a² + b² - 2ab cos(C).
Common use cases:
- Surveying and land measurement
- Navigation triangle problems
- Engineering structural analysis
Frequently Asked Questions
Dr. David Park
Applied Mathematician, PhD Mathematics
David holds a PhD in Applied Mathematics from MIT. He has published research on numerical methods and computational algorithms used in engineering and scientific calculators.
Was this calculator helpful?
People Also Use
Percentage Calculator
Calculate percentages easily with our free online tool. Find what percent of a number is, percentage increase, decrease, and more in one calculator.
Percentage Change
Calculate the percentage change between two values instantly, showing both the percent and absolute difference.
Percentage Increase
Calculate the result after increasing a value by a given percentage, showing both the new value and the increase amount.
Percentage Decrease
Calculate the result after decreasing a value by a given percentage, showing both the new value and the reduction amount.
Percentage Difference
Calculate the percentage difference between two values using the average of both as the reference base.
Fraction to Decimal
Convert any fraction to its decimal equivalent instantly by dividing the numerator by the denominator.
Square Root
Calculate the square root of any positive number instantly with this free online square root calculator.
Exponent Calculator
Calculate the result of raising a base to any exponent, supporting positive, negative, and fractional powers.