Home Back

Right Angle Triangle Sides Calculator

Side Formula:

\[ a = hyp \times \sin(\theta) \]

meters
degrees
meters

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is a Right Angle Triangle Sides Calculator?

Definition: This calculator computes the length of a side in a right-angled triangle given the hypotenuse and an angle.

Purpose: It helps students, engineers, and designers quickly determine side lengths in right-angled triangles for various applications.

2. How Does the Calculator Work?

The calculator uses the trigonometric formula:

\[ a = hyp \times \sin(\theta) \]

Where:

Explanation: The sine function relates the angle to the ratio between the opposite side and hypotenuse in a right-angled triangle.

3. Importance of Right Angle Triangle Calculations

Details: These calculations are fundamental in geometry, physics, engineering, architecture, and many practical applications like construction and navigation.

4. Using the Calculator

Tips: Enter the hypotenuse length in meters and the angle in degrees (must be between 0 and 90). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What if I know the adjacent side instead of the hypotenuse?
A: Use the cosine function instead: \( a = adj \times \tan(\theta) \).

Q2: Why does the angle need to be less than 90 degrees?
A: In a right-angled triangle, the other two angles must be acute (less than 90°) since all angles sum to 180°.

Q3: How accurate are the results?
A: Results are mathematically precise based on the inputs, though practical measurements may have slight variations.

Q4: Can I use this for non-right-angled triangles?
A: No, this calculator is specifically for right-angled triangles. For other triangles, use the Law of Sines or Cosines.

Q5: What units should I use?
A: The calculator uses meters, but you can use any unit as long as you're consistent (all lengths in the same unit).

Right Angle Triangle Sides Calculator© - All Rights Reserved 2025