Two forces of magnitudes 3N and 4N respectively are acting on a body. Calculate the resultant force if the angle between them is-
`(i) 0^(@)" "(ii) 180^(@)" "(iii) 90^(@)`

Explanation

To solve the problem of finding the resultant force when two forces of magnitudes 3N and 4N are acting on a body at different angles, we can use the formula for the resultant of two vectors:

\[ R = \sqrt{F_1^2 + F_2^2 + 2F_1F_2 \cos \theta} \]

where:
- \( R \) is the resultant force,
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