Q 3220691511.     The angles of elevation of he top of the tower from the top and foot of a pole ......? respectively 30° and 45° . If `h_T` is the height of the tower and `h_p` is the height of the pole, then which of the following are correct ?

1. `(2 h_P h_T)/(3 + sqrt3) = h_p^2`

2. `(h_T- h _P)/ ( sqrt3 + 1 ) = h_P/2`

3. `2 ( h_P + h_T)/h_P = 4 + sqrt3`

The select the correct answer using the cod given below.

NDA 2017 Paper 1 Sept
A

1 and 3 only

B

2 and 3 only

C

1 and 2 only

D

1,2 and 3

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