An airplane is pushed 22 degrees eastward off its northward course by a jet stream traveling at a speed of 136.73 km/hr. the new speed is 365 km/hr. find the plane's original velocity.

As the speed of airplane is change due to jet stream

So the net speed is given as

now we can rearrange it as

now by the formula of vector difference we have

now plug in all values

so above is the speed of the plane

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