Triangle Area Formula:
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Definition: This calculator computes the area of a triangle when you know two sides and the included angle (SAS).
Purpose: It helps in geometry calculations, construction planning, and land measurement where right angles aren't present.
The calculator uses the formula:
Where:
Explanation: The formula calculates the area by multiplying half the product of two sides by the sine of their included angle.
Details: Accurate area calculation is essential for material estimation, land surveying, architectural design, and various engineering applications.
Tips: Enter the lengths of two sides and the included angle (must be between 0° and 180°). All values must be positive numbers.
Q1: Why use this formula instead of base × height?
A: When the height isn't known or easily measurable, this SAS formula provides a direct calculation using readily available measurements.
Q2: What if my angle is exactly 90 degrees?
A: The formula still works and simplifies to the standard right triangle area formula (½ × base × height) since sin(90°) = 1.
Q3: How accurate is this calculation?
A: The calculation is mathematically precise, though real-world accuracy depends on the precision of your measurements.
Q4: Can I use this for any triangle?
A: Yes, as long as you know two sides and the included angle, this formula works for all triangle types (acute, obtuse, or right-angled).
Q5: What units should I use?
A: The calculator uses meters for length, but any consistent unit will work (just remember your area will be in square units of that measurement).