The formula to calculate the surface area of a 90-degree elbow is A = πDL, where A is the surface area, D is the diameter of the elbow, and L is the centerline radius. The surface area of the elbow is essentially the curved surface area of the elbow pipe fitting. This formula is derived from the mathematical principles of geometry and calculus, specifically the surface area of a cylinder.
ZERO as there is no angle in peace BUT if one was to figure 4- 90 deg ells they would have a circle consisting of 4 pieces
Generally it is a 90 degree fitting Some non knowing also call a 45 deg an ell as a 11 1/4 221/2 60 deg etc
How to calculate 90 degree and 40 degree elbow center >For 90 degree elbow(Dia*38.1) this formula used for only 90 degree elbow. >For 45 degree elbow(45/2of tan*Dia*1.5*25.4) this answer obtained in (mm).
A= 2*(w+h)*(l1+l2) W=width H=Height L1, L2 Length of Elbow
(90/2tan*Dia*1.5*25.4) (45/2tan*Dia*1.5*25.4) u will obtain Ur answer in (mm)
An Obtuse angle is greater than 90 deg; an Acute angle is less then 90 deg.
Two 90 DEG angles make 180 DEG Plane? 90+90=180
cosecant = 1/sine csc 90 deg = 1/(sin 90 deg) = 1/1 = 1
90 degree
At most two: 45 degrees(deg) and 45 deg. Of course, there may be no equal angles, e.g. 30, 60 and 90 deg. As long as the angles add up to 180 deg and one is one right angle (90 deg) while the other two add up to 90 deg, the triangle is a right triangle.
This works with any angle . Tan half angle x bend radius. Eg is for a 154 o/d one and a half diameter 90° at 60°. Tan30x225=129.9.