Geometry in videos - from the beginning

SN 3 | EP 7 | Trigonometry : how to calculate with angles in right triangles and quadrilaterals

Till now we could only use angles in constructions; now it's time to calculate with them in right triangles which goes hand in hand with new exciting functions as sine, cosine and tangent. Look how we enlarge our possibilities here

Available: Amazon.com

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Geometry in videos - from the beginning
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