state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Physics Vectors Addition and subtraction of vectors
By triangle law of vector or parallelogram law of vector addition , the magnitude of the resultant \(\vec R\) of two vectors \(\vec P\) and \(\vec Q\) inclined to each other at angle (θ) is given by-
1
\(\sqrt{ P^2 +Q^2 +2 PQ cot\theta }\)
2
\(\sqrt{ P^2 +Q^2 +2 PQ cos\theta }\)
3
\(\sqrt{ P^2 +Q^2 +2 PQ sin\theta }\)
4
\(\sqrt{ P^2 +Q^2 +2 PQ }\)
5
Question Not Attempted