text: Angle between two Planes in 3D | C program to find the Angle between two Planes in 3 D . ; Function to find Angle ; Driver Code
code: #include <stdio.h> NEW_LINE #include <math.h> NEW_LINE void distance ( float a1 , float b1 , float c1 , float a2 , float b2 , float c2 ) { float d = ( a1 * a2 + b1 * b2 + c1 * c2 ) ; float e1 = sqrt ( a1 * a1 + b1 * b1 + c1 * c1 ) ; float e2 = sqrt ( a2 * a2 + b2 * b2 + c2 * c2 ) ; d = d / ( e1 * e2 ) ; float pi = 3.14159 ; float A = ( 180 / pi ) * ( acos ( d ) ) ; printf ( " Angle ▁ is ▁ % .2f ▁ degree " , A ) ; } int main ( ) { float a1 = 1 ; float b1 = 1 ; float c1 = 2 ; float d1 = 1 ; float a2 = 2 ; float b2 = -1 ; float c2 = 1 ; float d2 = -4 ; distance ( a1 , b1 , c1 , a2 , b2 , c2 ) ; return 0 ; }