Right triangle · sides & angles
Right triangle · sides & angles: use first perpendicular leg, second perpendicular leg. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
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Formula & explanation
c=√(a²+b²); A=atan(a/b); B=90°−A
Variables & units
- First perpendicular leg
- units · minimum 0.000001, maximum 1000000000000
- Second perpendicular leg
- units · minimum 0.000001, maximum 1000000000000
Worked example
Legs 3 and 4 give hypotenuse 5 and acute angles approximately 36.869898° and 53.130102°.
Assumptions
The two supplied sides must meet at a right angle. Angles are in degrees.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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