Question

Can anyone help me with this question.i need answers with steps​

Answer 1

Answer:

331.2 m

Step-by-step explanation:

From figure :

tan 45° = (AO/OC)

⇒ 1 = 210/y

⇒ y = 210

Also,

tan 60° = AO/BO

⇒ √3 = 210/x

⇒ x = (210/√3)

⇒ x = 70√3

Now,

width of river = x + y

                     = 70√3 + 210

                    = 331.2

Therefore,

Width of river = 331.2 m

Hope it helps!

Answer 2

Step-by-step explanation:

tan45°= (height of the plane)/ (horizontal distance x with first point)

x= 210*tan45°=210m

tan60°=(height of the plane)/ (horizontal distance y with second point)

y=210*tan60° = 210√3

total distance= x+y= 210(1+√3)m