1. Module 7

1.7. Page 2

Mathematics 10-3 Module 7 Lesson 2

Module 7: Trigonometry

 

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When you use the tangent ratio to solve problems, many times you will set up equal ratios that include the tangent ratio. Sometimes the unknown variable will end up as the denominator in one of those ratios. In this activity you will review the algebra you will need to solve equations where the unknown, or variable, appears in the denominator of one of those ratios.

 

Example 1

 

Solve for x.

 

 

 

Solution

 

 

You can check your answer by substituting back into the original equation.

 

Left Side

Right Side

LS = RS

 

Practise this skill.

 

Self-Check

 

SC 1. Solve for x.

 

 

 

SC 2. Solve for x.

 

 

 

Compare your answers.