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Jet plane A is moving towards east at a ...

Jet plane A is moving towards east at a speed of `900 km//hr`. Another plane B has its nose pointed towards `45° N` of E but appears to be moving in direction `60° N` of W to the pilot in A. Find the true velocity of B. `[sin 60° = 0.866 , sin 75° = 0.966]`

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The correct Answer is:
`807 kph`
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