Question

the angle of depression of a boat from top of light house is 25​

Answer 1

Answer:

let AB be the light house

C and D are the boats

angle of Depression formed is 46

o

and 30

o

∴ i.e, ∠CAE=46

o

∠DAE=30

o

.

∴ ∠ACB=46

o

∠ADB=30

o

.

and also given CD=6 cm

tan45=

BC

AB

=AB=BC

tan30=

BD

AB

=

6+BC

AB

3

1

=

6+BC

AB

6+BC=

3

AB as BC=AB

6+AB=

3

AB AB=

3

−1

6

=

2

r

3

(

3

+1

=36

AB=3(

3

+1)