import VectorUtil
import math
from VectorLength import vector_length
from ScalarProduct import scalar_product
def angle_in_between(u, v):
product = scalar_product(u, v)
print()
ulen = vector_length(u)
print()
vlen = vector_length(v)
print()
print("cos(γ) = u*v / |u|*|v|")
print(product, " / (", ulen, " * ", vlen, ")")
print(product, " / (", ulen * vlen, ")")
cos = product/(ulen * vlen)
print("cos(γ) = ", cos)
print("γ = arccos(cos(γ))")
print("γ = ", math.acos(cos), "rad ~", math.degrees(math.acos(cos)), "°")
if(__name__ == "__main__"):
u = VectorUtil.read_vector("Input U:")
v = VectorUtil.read_vector("Input V:")
angle_in_between(u, v)
from OrtogonalVector import ortogonal_vector
from ScalarProduct import scalar_product
import VectorUtil
def triple_product(a, b, c):
print("[a, b, c] = (a×b)·c ")
ort = ortogonal_vector(a, b)
vec = scalar_product(ort, c)
print("[a, b, c] =", vec)
return vec
if (__name__ == "__main__"):
a = VectorUtil.read_vector("Input A:")
b = VectorUtil.read_vector("Input B:")
c = VectorUtil.read_vector("Input C:")
triple_product(a, b, c)