If a line makes an angle of with each of X and Y -axis, then the acute angle made by Z -axis is

Step-by-step solution

Given, l=m= 3 = 1 2 array lc & l²+m²+n²=1 & ( 1 2 )²+ ( 1 2 )²+n²=1 & 1 4 + 1 4 +n²=1 & n²= 1 2 n= 1 2 array Then the acute angle made by Z -axis is ⁻¹ ( 1 2 )= 4