How to Calculate First Acute Angle of Concave Quadrilateral?
First Acute Angle of Concave Quadrilateral calculator uses First Acute Angle of Concave Quadrilateral = arccos((First Outer Side of Concave Quadrilateral^2+First Inner Side of Concave Quadrilateral^2-Inner Diagonal of Concave Quadrilateral^2)/(2*First Outer Side of Concave Quadrilateral*First Inner Side of Concave Quadrilateral)) to calculate the First Acute Angle of Concave Quadrilateral, First Acute angle of Concave Quadrilateral formula is defined as the acute angle formed due to the intersection of first outer and first inner side of Concave quadrilateral. First Acute Angle of Concave Quadrilateral is denoted by ∠_{First Acute} symbol.
How to calculate First Acute Angle of Concave Quadrilateral using this online calculator? To use this online calculator for First Acute Angle of Concave Quadrilateral, enter First Outer Side of Concave Quadrilateral (S_{First Outer}), First Inner Side of Concave Quadrilateral (S_{First Inner}) & Inner Diagonal of Concave Quadrilateral (d_{Inner}) and hit the calculate button. Here is how the First Acute Angle of Concave Quadrilateral calculation can be explained with given input values -> 1042.489 = arccos((10^2+7^2-4^2)/(2*10*7)).