Find the angle between the lines whose direction cosines are given by the equations(i) l + m + n = 0 and l2 + m2 − n2 = 0(ii) 2l − m + 2n = 0 and mn + nl + lm = 0(iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0(iv) 2l + 2m − n = 0, mn + ln + lm = 0

Find the angle between the lines whose direction cosines are given by

1.	Find the angle between the lines whose direction cosines are given by the equations(i) l + m + n = 0 and l2 + m2 − n2 = 0(ii) 2l − m + 2n = 0 and mn + nl + lm = 0(iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0(iv) 2l + 2m − n = 0, mn + ln + lm = 0
Answer» Find the angle between the lines whose direction cosines are given by the equations (i) l + m + n = 0 and l² + m² − n² = 0 (ii) 2l − m + 2n = 0 and mn + nl + lm = 0 (iii) l + 2m + 3n = 0 and 3lm − 4ln + mn = 0 (iv) 2l + 2m − n = 0, mn + ln + lm = 0