From a 30 metre high bridge the angle of depression of a boat is 60deg

1.	From a 30 metre high bridge the angle of depression of a boat is 60degree find the horizontal distance of the boat from the bridge
Answer» > ANSWER AB=BC=25m ∠B=90 o ∠BAC=θ Now, in △ABC ∠BAC=∠DCA (ALTERNATE ANGLE) ⇒tanθ= BC AB ⇒tanθ=1 θ=45 o (∵tan45 0 =1) solution

From a 30 metre high bridge the angle of depression of a boat is 60degree find the horizontal distance of the boat from the bridge

Answer»

ANSWER

AB=BC=25m

∠B=90

∠BAC=θ

Now, in △ABC

∠BAC=∠DCA (ALTERNATE ANGLE)

⇒tanθ=

⇒tanθ=1

θ=45

(∵tan45

=1)

solution

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From a 30 metre high bridge the angle of depression of a boat is 60degree find the horizontal distance of the boat from the bridge

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