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Grade: 11

                        

A And B Are Two Vectors And Their resulants is R For What angle it is maximum for what angle is it minimumn

4 years ago

Answers : (1)

Piyush Kumar Behera
435 Points
							
We know the expression for R=(A2+B2+2ABcos\theta)½
As A& B2 are positive and constant so the value of R will be Maximum when cos\theta is Maximum.
Hence cos\theta is maximum at \theta=0o so R is maximum at \theta=0o.
Similarly cos\theta is minimum at \theta=180o so R is minimum at \theta=180o.
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4 years ago
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