Answer:
Step-by-step explanation:
Given:
Length of ladder, y = 10 ft
θ = π/3 rad
Using cosine rule,
Sin θ = opposite/hypotenuse
Sin θ = x/y
Sin θ = x/10
Differentiating both sides with respect to dθ,
10 × cos θ × dθ = dx
10 cos θ = dx/dθ
dx/dθ = 10 × cos π/3
= 5 ft/radians.
Answer:
The correct option is B.
Step-by-step explanation:
If polar coordinates of point P are
Where, r is real number and θ is in radian, then all polar coordinates of point P are defined as
The given coordinates are . So, all polar coordinates of point P are
Therefore correct option is B.
