Given two vectors vec(A) = hat(i) - 2hat(j) - 3hat(k) and vec(B) = 4hat(i) - 2hat(j) + 6hat(k). The angle made by (vec(A) + vec(B)) with the X-axis is

Given two vectors vec(A) = hat(i) - 2hat(j) - 3hat(k) and vec(B) = 4ha

1.	Given two vectors vec(A) = hat(i) - 2hat(j) - 3hat(k) and vec(B) = 4hat(i) - 2hat(j) + 6hat(k). The angle made by (vec(A) + vec(B)) with the X-axis is
Answer» `30^(@)` `45^(@)` `60^(@)` `90^(@)` ANSWER :B