Question

Choose the correct alternative:
The value of θ ∈ `(0, pi/2)` for which the vectors `"a" = (sin theta)hat"i" = (cos theta)hat"j"` and `vec"b" = hat"i" - sqrt(3)hat"j" + 2hat"k"` are perpendicular, equaal to

Options

• `pi/3`

• `pi/6`

• `pi/4`

• `pi/2`

Answer 1

`pi/3`