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Year 10 Interactive Maths - Second Edition


Finding Angles

We can use inverse trigonometric functions to find the angle(s) of a right-angled triangle if we know the length of any two sides.


Using Inverse Sine

Example 10

Solution:


Example 11

Solution:


Key Terms

inverse sine, inverse sin

 

Study Another Topic in Chapter 15: Trigonometry

Naming the Sides of a Right-Angled Triangle ] Finding Side-Lengths ] Using the Cosine Ratio ] Using the Tangent Ratio ] Using a Graphics Calculator ] [ Finding Angles ] Using Inverse Cosine ] Using Inverse Tangent ] Problem Solving ] Composite Figures ] Directions and Bearings ] Angles of Elevation and Depression ] Three-Dimensional Problems ] Problem Solving Unit ] Projects ] Symbols ] Index ]

 

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