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Area (Properties of a triangle)
Δ = ½ bc sin A
Where: A = angle A, Δ = area of triangle, b = side opposite B, c = side opposite C
Solved example
Given: A = 30°, b = 5, c = 10
Find: Delta (area of triangle)
- Formula: Δ = b·c·sin(A)/2
- Substitute the values: Δ = 10·5·sin(30°)/2
- Result: Δ = 12.5
Answer: Delta = 12.5
Calculator
How to calculate Area (Properties of a triangle)
- Write down the formula: Δ = ½ bc sin A.
- Note the known values (A, b, c).
- Substitute them and simplify to find Delta.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Area (Properties of a triangle)?
The formula is Δ = ½ bc sin A, where A = angle A, Δ = area of triangle, b = side opposite B, c = side opposite C.
What is Area (Properties of a triangle) when A = 30°, b = 5, c = 10?
Delta = 12.5. Substitute the values into Δ = ½ bc sin A and simplify.