Question

Find the area of ​​the triangle AB = 10cm, BC = 8cm, ∠CAB = 30.

• A. 25cm²
• B. 20cm²
• C. 15cm²
• D. 12cm²

Answer 1

Answer:

B. 20cm²

Area = 1/2 × ab × sinx

= 1/2 × 10 × 8 × sin 30

= 1/2 × 80 × 1/2

= 20cm²