Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 1 - No. 46)
What are the steps for solving the problem of using the ratios?
Draw a clearly labelled diagram
Label the sides O, A, and H.
Decide which ratio you need to use.
Solve the equation.
解释
These are the correct steps for solving a trigonometry problem.