Objective

To find the missing side length of a right triangle using the Pythagorean Theorem or a Trigonometry Ratio

Additional Web Resources

http://www.mathsteacher.com.au/year9/ch15_trigonometry/02_side/lengths.htm        Pay attention how each problem is worked out step-by-step.

http://www.mathwarehouse.com/trigonometry/sine-cosine-tangent-practice3.php        Practice problems and an extra online video.

Lesson Video and Guided Notes

Pay Attention to the Following

• Pythagorean Theorem
• Trig Ratio
• Using Your Calculator
• Algebra steps when
   solving for x