In parallelogram law of vector, the dire...

In parallelogram law of vector, the direction of resultant vector is given by

`tanalpha=(Qcos theta)/(P+Qsin theta`

`tanalpha=(Qsin theta)/(P+Qcos theta`

`tanalpha=(P sin theta)/(P+Qcos theta`

`tanalpha=(P cos theta)/(P+Qcos theta`

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