Ht and Dist

Asked by baidshryans | 1st Oct, 2008, 10:23: PM

Expert Answer:

so we are given DB=16m

PDB=30 and CPD = 60

tan30 = 1/3 = PB / BD = PB /16  ==> PB = 16/3 m

AB = 2PB = 32/3 m

In triangle PCD ,we know CPD = 60 and PD = (BD2+PB2PDC = 90 - PDB = 60

so PCD will also be equal to 60 i.e. PCD is a equilateral triangle.

so CD will be equal to PD = 32/3 m

 

Answered by  | 2nd Oct, 2008, 01:23: AM

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