Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 10)
Given that two sides of a triangle are 6 cm and 8 cm, and the angle between them is 60 degrees, what is the area of the triangle (rounded to one decimal place)?
16.0 cm²
24.0 cm²
20.8 cm²
34.6 cm²
설명
Area = 1/2 * 6 * 8 * sin(60) ≈ 20.8 cm²