Home › NEET UG › physics › c11phy_vector_components › 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
A ceiling fan rotates at $120$ rpm. Its angular speed is approximately:A stone tied to a string is whirled in a horizontal circle at constant speed. Its acceleraA stone is thrown at $45^\circ$ on level ground with speed $u = 10$ m/s. Using $g = 10$ m/A football kicked with speed $u = 20$ m/s at $30^\circ$ above horizontal has initial vertiPer NCERT §3.6 (resultant of two equal vectors), if |A| = |B| = a and they make 90° betweePer NCERT §3.6 (resultant of two equal vectors), if |A| = |B| = a and they make 60° betweePer NCERT §3.5, components of vector A along x and y axes are scalars whose SIGN depends oPer NCERT §3.6 (eqn 3.24a), the magnitude of the resultant of two vectors A and B at angle