Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 17)
Given a triangle where side a = 5 cm, side b = 8 cm, and angle C = 60 degrees, what would be the next step to find the area using Area = 1/2 * ab * sinC?
Multiply 5 and 8
Apply Pythagoras' theorem
Use sine function to calculate sin(60)
Subtract 60 from 180
説明
Evaluate the sin(60).