Question

5 points.....

physics...

The angles which a vector i+j+2k makes with X, Y and Z axes respectively are..

(1) 60°, 60°, 60° (2) 45°, 45°, 45° (3) 60°, 60°, 45 (4) ​

Answer 1

angle i + j + 2k with x is cos-1 1/√6

with y cos-1 1/√6

with z. cos-1 2/√6 = cos-1 √2/3