Home › CBSE Class 11 › Physics › Motion in a Plane › Per NCERT §3.5 eqn 3.15, the angle θ that a vect…
Per NCERT §3.5 eqn 3.15, the angle θ that a vector A makes with the x-axis (given components A_x and A_y) is which?
Acos⁻¹(A_x · A_y)
Btan⁻¹(A_x / A_y)
Ctan⁻¹(A_y / A_x)
Dsin⁻¹(A_y / A_x)
Answer & Solution
Correct answer: C. tan⁻¹(A_y / A_x)
NCERT eqn 3.15: tan θ = A_y / A_x ⇒ θ = arctan(A_y / A_x).
Related questions
The time for one full revolution is the:Centripetal acceleration has constant magnitude but is not a constant vector because its:Newton named the centre-directed acceleration:The acceleration in uniform circular motion always points:A car goes round a roundabout at a steady 20 km/h. Its motion is:For a fixed launch speed, range is greatest at a launch angle of:The horizontal distance from launch to where the projectile lands back at the same level iTime of flight is twice the time to reach maximum height because the path is: