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In vector diagram shown in figure where ...

In vector diagram shown in figure where `(vecR)` is the resultant of vectors `(vecA)` and `(vecB)`. If `R=(B)/sqrt(2)`, the value of angle `theta` is :

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`75^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B

`sintheta=(R)/(2)=(B//sqrt(2))/(B)=(1)/sqrt(2)rArr theta=45^(@)`
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