Questions
The angle between the vector and unit vector along X-axis is
a
cos-113
b
cos-112
c
cos-132
d
cos-112
detailed solution
Correct option is A
The angle between, p=i^+j^+k^and X-axis, x = i^ is given bycosθ=p·x|p||x|=(i^+j^+k^)·(i^)12+12+12·12=13 ∴ θ = cos-113Talk to our academic expert!
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