Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 36)
If a triangle has sides 6 cm, 8 cm and the angle between these sides is 30°, what is the area of the triangle?
24 cm²
12 cm²
10 cm²
48 cm²
คำอธิบาย
Use 1/2 * a * b * sin(C) = 1/2 * 6 * 8 * sin(30°) = 12 cm²