Two vectors $A$ and $B$ inclined at angle $\theta$ have a resultant $R$ which makes an angle $\phi$ with $A$. If the directions of $A$ and B are interchanged and resultant will have the same

Maximum and minimum magnitudes of the resultant of two vectors of magnitudes $P$ and $Q$ are in the ratio $3:1.$ Which of the following relations is true

Two forces $P$ and $Q$, of magnitude $2F$ and $3F$, respectively, are at an angle $\theta $ with each other. If the force $Q$ is doubled, then their resultant also gets doubled. Then, the angle $\theta $ is ....... $^o$

“Explain Triangle method (head to tail method) of vector addition.”

Give equation to find the value of resultant vector and the direction of two vectors.

A person goes $10\, km$ north and $20\, km$ east. What will be displacement from initial point........$km$