Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 6 - No. 33)
Which of the following are essential for using trigonometric ratios to solve a problem?
Two angle measurements
A labeled diagram of the triangle.
The area of the triangle.
A protractor.
คำอธิบาย
A labeled diagram helps set up the problem and identify the sides and angles.