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A pole is standing on the top of a house...

A pole is standing on the top of a house. Height of house is 25 metres. The angle of elevation of the top of house from point P is `45^@` and the angle of elevation of the top of pole from P is `60^@`. Point P is on the ground level. What is the height (in meteres) of pole?
एक घर की चोटी पर एक खम्भा खड़ा है। घर की ऊँचाई 25 मीटर है। बिंदु P से घर की चोटी का उन्नयन कोण `45^@` है तथा P से खम्भे की चोटी का उन्नयन कोण `60^@` है। बिंदु P भूमि कौ सतह पर है। खम्भे की ऊँचाई (मीटर में) क्या है?

A

`10( sqrt3+1)`

B

`15 (sqrt3+1)`

C

`25 (sqrt3-1)`

D

`20 (sqrt3-1)`

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