Apply the trig ratios to find unknown angle measures. Learners review the side and angle relationships in right triangles and then apply the ratios to find the angle measures. The video shows several worked-out examples applying all three ratios.

Concepts

sine, cosine, tangent, trigonometric ratios, angles

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Additional Tags

math

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Instructional Ideas

• Use a graphic organizer to record an example of each trigonometric ratio
• Flip your classroom by assigning the video as homework; use class time for practice problems 

Classroom Considerations

• If assigning the video for independent viewing, ensure students have Internet access

• This video is hosted on YouTube

Pros

• Includes links to additional instructional videos for important background knowledge
• Short length helps maintain viewers' attention

Cons

• None

Common Core

SL.9-10.2 HSG-SRT.C.8 RST.9-10.7