Special Right Triangle Proofs | 30-60-90 and 45-45-90 Triangle Side Ratios Proof | Partners in Prime

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*Let’s learn about special right triangles!* In this video, we walk through two proofs and derive the ratios for the side lengths of 45-45-90 triangles and 30-60-90 triangles. Whether you’re learning about special right triangles for the first time or just need a quick review, this video is for you!

Once you understand the proofs for special right triangles, check out our videos explaining how to apply these ratios to problems:

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Its good, when time I asking my teacher his answer don't understand for me.

For example value of sin210 how proove without see a table of trigonometry? Tell please short way?

RobaB.-zhee

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