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3149.1. Triangle, parallelogram, diamond area formulas, through narrow angle sine value.

Check the correct answer!

A cathetus, that is located against the 30 degrees big angle, is a half shorter than the hypotenuse. Or, the hypotenuse is two times longer than the cathetus, that is located against the 30 degrees big angle?
Grade:
9
Subject
Geometry
Theme
Metrical connections in right-angled triangle.
Subtheme
Triangle, parallelogram, diamond area formulas, through narrow angle sine value.

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