Revit Families 104 – Trigonometry for Right Triangles

c = sqrt(a ^ 2 + b ^ 2)
A = atan(a / b)
B = atan(b / a)

Known: a, c

b = sqrt(c ^ 2 – a ^ 2)
A = asin(a / c)
B = acos(a / c)

Known: b, c

a = sqrt(c ^ 2 – b ^ 2)
A = acos(b / c)
B = asin(b / c)

Known: c, A

a = c * sin(A)
b = c * cos(A)
B = 90° – A

Known: c, B

a = c * cos(B)
b = c * sin(B)
A = 90° – B

b = a * tan(B)
c = a / cos(B)
A = 90° – B

Known: b, A

a = b * tan(A)
c = b / cos(A)
B = 90° – A

Known: a, A

b = a / tan(A)
c = a / sin(A)
B = 90° – A

Known: b, B

a = b / tan(B)
c = b / sin(B)
A = 90° – B