Given that f(θ) = sin θ - √3 cos θ.
Expressing f(θ) in the form R sin(θ - α) where R > 0 and α an acute angle, we obtain f(θ) is:
10 sin (θ - π/3).
2 sin(θ - π/3).
√10 sin(θ - π/4).
2sin(θ - π/2).
