Calcea Johnson and Ne'Kiya Jackson believe they can prove the Pythagorean Theorem using ... the proof is independent of the Pythagorean trig identity \sin^2x + \cos^2x = 1." RELATED VIDEO ...

For students between the ages of 11 and 14. Introduction to trigonometry for right-angled triangles Learn about three trigonometric ratios in similar right-angled triangles with this BBC Bitesize ...

When she started a math contest with a bonus question challenging students to create a new proof for the Pythagorean theorem using trigonometry, teacher Michelle Blouin Williams didn’t expect ...