Question

find the distance between (-5;7)and (-1;3)​

Answer 1

✌️❣️

Let the height of the tree be y and width of the river be x and CD = 40 m

In ΔABD, tan 300 =

A

x

+

40

⇒ x+40 = y

√

3

………..(i)

In ΔABC,

tan 600 =

A

=

y

x

⇒ y = x

√

3

……………(ii)

Putting the value of y from (ii) to (i)

x+40= [x

√

3

]

√

3

= 3x

40 = 2x

⇒ x= 20

y = x

√

3

= 20

√

3

Height of the tree = 20

√

3

m

Width of the river = 20 m.

✌️❣️

Answer 2

the answer is 4√2............