Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 7)
What formula is used to calculate the area of a triangle when you know two sides and the included angle?
Area = 1/2 * base * height
Area = 1/2 * ab * sinC
Area = a^2 + b^2
Area = ab
解释
The formula 1/2 * a * b * sin C allows calculation with two sides and the included angle.